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Java 1.8+ Library with tons of utility classes required in all projects
/*
* Copyright (C) 2014-2022 Philip Helger (www.helger.com)
* philip[at]helger[dot]com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.helger.commons.string;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.math.RoundingMode;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import com.helger.commons.ValueEnforcer;
import com.helger.commons.annotation.Nonempty;
import com.helger.commons.annotation.PresentForCodeCoverage;
/**
* This class contains the methods to parse String objects to numeric values.
* Before v3.7.0 this was contained in class {@link StringHelper}.
*
* @author Philip Helger
*/
@Immutable
public final class StringParser
{
/** The default radix used to convert string values to numeric values */
public static final int DEFAULT_RADIX = 10;
@PresentForCodeCoverage
private static final StringParser INSTANCE = new StringParser ();
private StringParser ()
{}
/**
* Get the unified decimal string for parsing by the runtime library. This is
* done by replacing ',' with '.'.
*
* @param sStr
* The string to unified. Never null.
* @return Never null.
*/
@Nonnull
@Nonempty
private static String _getUnifiedDecimal (@Nonnull @Nonempty final String sStr)
{
return StringHelper.replaceAll (sStr, ',', '.');
}
// ---[boolean]---
/**
* Try to interpret the passed object as boolean. This works only if the
* passed object is either a {@link String} or a {@link Boolean}.
*
* @param aObject
* The object to be interpreted. May be null.
* @return false if the passed object cannot be interpreted as a
* boolean.
*/
public static boolean parseBool (@Nullable final Object aObject)
{
return parseBool (aObject, false);
}
/**
* Try to interpret the passed object as boolean. This works only if the
* passed object is either a {@link String} or a {@link Boolean}.
*
* @param aObject
* The object to be interpreted. May be null.
* @param bDefault
* The default value to be returned, if the object cannot be
* interpreted.
* @return The boolean representation or the default value if the passed
* object cannot be interpreted as a boolean.
*/
public static boolean parseBool (@Nullable final Object aObject, final boolean bDefault)
{
if (aObject instanceof Boolean)
return ((Boolean) aObject).booleanValue ();
if (aObject instanceof String)
return parseBool ((String) aObject);
return bDefault;
}
/**
* Parse the given {@link String} as boolean value. All values that are equal
* to "true" (ignoring case) will result in true return values.
* All other values result in false return values. This method is
* equal to {@link Boolean#parseBoolean(String)}
*
* @param sStr
* The string to be interpreted. May be null.
* @return true if the passed string matches "true" (ignoring
* case), false otherwise.
* @see Boolean#parseBoolean(String)
*/
public static boolean parseBool (@Nullable final String sStr)
{
return Boolean.parseBoolean (sStr);
}
/**
* Parse the given {@link String} as boolean value. All values that are equal
* to "true" (ignoring case) will result in true return values.
* All values that are equal to "false" (ignoring case) will result in
* false return values. All other values will return the default.
*
* @param sStr
* The string to be interpreted. May be null.
* @param bDefault
* The default value to be returned if the passed string is neither
* "true" nor "false".
* @return true or false :)
*/
public static boolean parseBool (@Nullable final String sStr, final boolean bDefault)
{
// Do we need to start thinking at all?
if (sStr != null && sStr.length () > 0)
{
// Is it true?
if (sStr.equalsIgnoreCase ("true"))
return true;
// Is it false?
if (sStr.equalsIgnoreCase ("false"))
return false;
}
// Neither true nor false
return bDefault;
}
/**
* Try to interpret the passed object as boolean. This works only if the
* passed object is either a {@link String} or a {@link Boolean}.
*
* @param aObject
* The object to be interpreted. May be null.
* @return null if the passed object cannot be interpreted as a
* boolean, any other {@link Boolean} otherwise.
*/
@Nullable
public static Boolean parseBoolObj (@Nullable final Object aObject)
{
return parseBoolObj (aObject, null);
}
/**
* Try to interpret the passed {@link Object} as {@link Boolean}.
*
* @param aObject
* The object to be interpreted. May be null.
* @param aDefault
* The default value to be returned, if the passed object is
* null.
* @return The passed default value if the passed object is null,
* the matching {@link Boolean} otherwise.
*/
@Nullable
public static Boolean parseBoolObj (@Nullable final Object aObject, @Nullable final Boolean aDefault)
{
return aObject == null ? aDefault : parseBoolObj (aObject.toString ());
}
/**
* Returns a Boolean with a value represented by the specified
* string. The Boolean returned represents a true
* value if the string argument is not null and is equal,
* ignoring case, to the string {@code "true"}. This method is equal to
* {@link Boolean#valueOf(String)}
*
* @param sStr
* The string to be parsed. May be null.
* @return the Boolean value represented by the string. Never
* null.
*/
@Nonnull
public static Boolean parseBoolObj (@Nullable final String sStr)
{
return Boolean.valueOf (sStr);
}
/**
* Returns a Boolean with a value represented by the specified
* string. The Boolean returned represents a true
* value if the string argument is not null and is equal,
* ignoring case, to the string {@code "true"}, and it will return
* false if the string argument is not null and is
* equal, ignoring case, to the string {@code "false"}. In all other cases
* null is returned.
*
* @param sStr
* The string to be parsed. May be null.
* @return the Boolean value represented by the string. Never
* null.
*/
@Nullable
public static Boolean parseBoolObjExact (@Nullable final String sStr)
{
return parseBoolObjExact (sStr, null);
}
/**
* Returns a Boolean with a value represented by the specified
* string. The Boolean returned represents a true
* value if the string argument is not null and is equal,
* ignoring case, to the string {@code "true"}, and it will return
* false if the string argument is not null and is
* equal, ignoring case, to the string {@code "false"}. In all other cases
* aDefault is returned.
*
* @param sStr
* The string to be parsed. May be null.
* @param aDefault
* The default value to be returned if the value is neither "true" nor
* "false". May be null.
* @return the Boolean value represented by the string. Never
* null.
*/
@Nullable
public static Boolean parseBoolObjExact (@Nullable final String sStr, @Nullable final Boolean aDefault)
{
if (sStr != null && sStr.length () > 0)
{
if (Boolean.TRUE.toString ().equalsIgnoreCase (sStr))
return Boolean.TRUE;
if (Boolean.FALSE.toString ().equalsIgnoreCase (sStr))
return Boolean.FALSE;
}
return aDefault;
}
// ---[byte]---
/**
* Parse the given {@link Object} as byte with radix {@value #DEFAULT_RADIX}.
*
* @param aObject
* The Object to parse. May be null.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the string does not represent a valid value.
*/
public static byte parseByte (@Nullable final Object aObject, final byte nDefault)
{
return parseByte (aObject, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link Object} as byte with the specified radix.
*
* @param aObject
* The Object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the string does not represent a valid value.
*/
public static byte parseByte (@Nullable final Object aObject, @Nonnegative final int nRadix, final byte nDefault)
{
if (aObject == null)
return nDefault;
if (aObject instanceof Number)
return ((Number) aObject).byteValue ();
return parseByte (aObject.toString (), nRadix, nDefault);
}
/**
* Parse the given {@link String} as byte with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The String to parse. May be null.
* @param nDefault
* The value to be returned if the string cannot be converted to a
* valid value.
* @return The passed default parameter if the string does not represent a
* valid value.
*/
public static byte parseByte (@Nullable final String sStr, final byte nDefault)
{
return parseByte (sStr, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link String} as byte with the specified radix.
*
* @param sStr
* The String to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The value to be returned if the string cannot be converted to a
* valid value.
* @return The passed default parameter if the string does not represent a
* valid value.
*/
public static byte parseByte (@Nullable final String sStr, @Nonnegative final int nRadix, final byte nDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Byte.parseByte (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return nDefault;
}
/**
* Parse the given {@link Object} as {@link Byte} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Byte parseByteObj (@Nullable final Object aObject)
{
return parseByteObj (aObject, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link Object} as {@link Byte} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @param aDefault
* The default value to be returned, if the passed object cannot be
* converted. May be null.
* @return the passed default value if the object does not represent a valid
* value.
*/
@Nullable
public static Byte parseByteObj (@Nullable final Object aObject, @Nullable final Byte aDefault)
{
return parseByteObj (aObject, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link Object} as {@link Byte} with the specified radix.
*
* @param aObject
* The object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned, if the passed object cannot be
* converted. May be null.
* @return the passed default value if the object does not represent a valid
* value.
*/
@Nullable
public static Byte parseByteObj (@Nullable final Object aObject, @Nonnegative final int nRadix, @Nullable final Byte aDefault)
{
if (aObject == null)
return aDefault;
if (aObject instanceof Number)
return Byte.valueOf (((Number) aObject).byteValue ());
return parseByteObj (aObject.toString (), nRadix, aDefault);
}
/**
* Parse the given {@link String} as {@link Byte} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The String to parse. May be null.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static Byte parseByteObj (@Nullable final String sStr)
{
return parseByteObj (sStr, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link String} as {@link Byte} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The String to parse. May be null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Byte parseByteObj (@Nullable final String sStr, @Nullable final Byte aDefault)
{
return parseByteObj (sStr, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link String} as {@link Byte} with the specified radix.
*
* @param sStr
* The String to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Byte parseByteObj (@Nullable final String sStr, @Nonnegative final int nRadix, @Nullable final Byte aDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Byte.valueOf (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
// ---[double]---
/**
* Parse the given {@link Object} as double. Note: both the locale independent
* form of a double can be parsed here (e.g. 4.523) as well as a localized
* form using the comma as the decimal separator (e.g. the German 4,523).
*
* @param aObject
* The object to parse. May be null.
* @param dDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the object does not represent a valid value.
*/
public static double parseDouble (@Nullable final Object aObject, final double dDefault)
{
if (aObject == null)
return dDefault;
if (aObject instanceof Number)
return ((Number) aObject).doubleValue ();
return parseDouble (aObject.toString (), dDefault);
}
/**
* Parse the given {@link String} as double.
*
* @param sStr
* The string to parse. May be null.
* @param dDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the string does not represent a valid value.
*/
public static double parseDouble (@Nullable final String sStr, final double dDefault)
{
// parseDouble throws a NPE if parameter is null
if (sStr != null && sStr.length () > 0)
try
{
// Single point where we replace "," with "." for parsing!
return Double.parseDouble (_getUnifiedDecimal (sStr));
}
catch (final NumberFormatException ex)
{
// Fall through
}
return dDefault;
}
/**
* Parse the given {@link Object} as {@link Double}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param aObject
* The object to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Double parseDoubleObj (@Nullable final Object aObject)
{
return parseDoubleObj (aObject, null);
}
/**
* Parse the given {@link Object} as {@link Double}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param aObject
* The object to parse. May be null.
* @param aDefault
* The default value to be returned if the parsed object cannot be
* converted to a double. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Double parseDoubleObj (@Nullable final Object aObject, @Nullable final Double aDefault)
{
final double dValue = parseDouble (aObject, Double.NaN);
return Double.isNaN (dValue) ? aDefault : Double.valueOf (dValue);
}
/**
* Parse the given {@link String} as {@link Double}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param sStr
* The string to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Double parseDoubleObj (@Nullable final String sStr)
{
return parseDoubleObj (sStr, null);
}
/**
* Parse the given {@link String} as {@link Double}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param sStr
* The string to parse. May be null.
* @param aDefault
* The default value to be returned if the parsed string cannot be
* converted to a double. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Double parseDoubleObj (@Nullable final String sStr, @Nullable final Double aDefault)
{
final double dValue = parseDouble (sStr, Double.NaN);
return Double.isNaN (dValue) ? aDefault : Double.valueOf (dValue);
}
// ---[float]---
/**
* Parse the given {@link Object} as float. Note: both the locale independent
* form of a float can be parsed here (e.g. 4.523) as well as a localized form
* using the comma as the decimal separator (e.g. the German 4,523).
*
* @param aObject
* The object to parse. May be null.
* @param fDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the object does not represent a valid value.
*/
public static float parseFloat (@Nullable final Object aObject, final float fDefault)
{
if (aObject == null)
return fDefault;
if (aObject instanceof Number)
return ((Number) aObject).floatValue ();
return parseFloat (aObject.toString (), fDefault);
}
/**
* Parse the given {@link String} as float.
*
* @param sStr
* The string to parse. May be null.
* @param fDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the string does not represent a valid value.
*/
public static float parseFloat (@Nullable final String sStr, final float fDefault)
{
// parseDouble throws a NPE if parameter is null
if (sStr != null && sStr.length () > 0)
try
{
// Single point where we replace "," with "." for parsing!
return Float.parseFloat (_getUnifiedDecimal (sStr));
}
catch (final NumberFormatException ex)
{
// Fall through
}
return fDefault;
}
/**
* Parse the given {@link Object} as {@link Float}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param aObject
* The object to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Float parseFloatObj (@Nullable final Object aObject)
{
return parseFloatObj (aObject, null);
}
/**
* Parse the given {@link Object} as {@link Float}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param aObject
* The object to parse. May be null.
* @param aDefault
* The default value to be returned if the parsed object cannot be
* converted to a float. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Float parseFloatObj (@Nullable final Object aObject, @Nullable final Float aDefault)
{
final float fValue = parseFloat (aObject, Float.NaN);
return Float.isNaN (fValue) ? aDefault : Float.valueOf (fValue);
}
/**
* Parse the given {@link String} as {@link Float}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param sStr
* The string to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Float parseFloatObj (@Nullable final String sStr)
{
return parseFloatObj (sStr, null);
}
/**
* Parse the given {@link String} as {@link Float}. Note: both the locale
* independent form of a double can be parsed here (e.g. 4.523) as well as a
* localized form using the comma as the decimal separator (e.g. the German
* 4,523).
*
* @param sStr
* The string to parse. May be null.
* @param aDefault
* The default value to be returned if the parsed string cannot be
* converted to a float. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Float parseFloatObj (@Nullable final String sStr, @Nullable final Float aDefault)
{
final float fValue = parseFloat (sStr, Float.NaN);
return Float.isNaN (fValue) ? aDefault : Float.valueOf (fValue);
}
// ---[int]---
/**
* Parse the given {@link Object} as int with radix {@link #DEFAULT_RADIX}.
*
* @param aObject
* The Object to parse. May be null.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the string does not represent a valid value.
*/
public static int parseInt (@Nullable final Object aObject, final int nDefault)
{
return parseInt (aObject, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link Object} as int with the specified radix.
*
* @param aObject
* The object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the string does not represent a valid value.
*/
public static int parseInt (@Nullable final Object aObject, @Nonnegative final int nRadix, final int nDefault)
{
if (aObject == null)
return nDefault;
if (aObject instanceof Number)
return ((Number) aObject).intValue ();
return parseInt (aObject.toString (), nRadix, nDefault);
}
/**
* Parse the given {@link String} as int with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The String to parse. May be null.
* @param nDefault
* The value to be returned if the string cannot be converted to a
* valid value.
* @return The passed default parameter if the string does not represent a
* valid value.
*/
public static int parseInt (@Nullable final String sStr, final int nDefault)
{
return parseInt (sStr, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link String} as int with the specified radix.
*
* @param sStr
* The String to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The value to be returned if the string cannot be converted to a
* valid value.
* @return The passed default parameter if the string does not represent a
* valid value.
*/
public static int parseInt (@Nullable final String sStr, @Nonnegative final int nRadix, final int nDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Integer.parseInt (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return nDefault;
}
/**
* Parse the given {@link Object} as {@link Integer} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Integer parseIntObj (@Nullable final Object aObject)
{
return parseIntObj (aObject, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link Object} as {@link Integer} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @param aDefault
* The default value to be returned if the passed object cannot be
* converted to an Integer. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Integer parseIntObj (@Nullable final Object aObject, @Nullable final Integer aDefault)
{
return parseIntObj (aObject, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link Object} as {@link Integer} with the specified radix.
*
* @param aObject
* The object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed object cannot be
* converted to an Integer. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Integer parseIntObj (@Nullable final Object aObject, @Nonnegative final int nRadix, @Nullable final Integer aDefault)
{
if (aObject == null)
return aDefault;
if (aObject instanceof Number)
return Integer.valueOf (((Number) aObject).intValue ());
return parseIntObj (aObject.toString (), nRadix, aDefault);
}
/**
* Parse the given {@link String} as {@link Integer} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static Integer parseIntObj (@Nullable final String sStr)
{
return parseIntObj (sStr, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link String} as {@link Integer} with radix
* {@link #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Integer parseIntObj (@Nullable final String sStr, @Nullable final Integer aDefault)
{
return parseIntObj (sStr, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link String} as {@link Integer} with the specified radix.
*
* @param sStr
* The string to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Integer parseIntObj (@Nullable final String sStr, @Nonnegative final int nRadix, @Nullable final Integer aDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Integer.valueOf (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
/**
* Parse the given {@link String} as unsigned {@link Integer} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @return null if the string does not represent a valid value.
* @since 9.0.0
*/
@Nullable
public static Long parseUnsignedIntObj (@Nullable final String sStr)
{
return parseUnsignedIntObj (sStr, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link String} as unsigned {@link Integer} with radix
* {@link #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
* @since 9.0.0
*/
@Nullable
public static Long parseUnsignedIntObj (@Nullable final String sStr, @Nullable final Long aDefault)
{
return parseUnsignedIntObj (sStr, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link String} as unsigned {@link Integer} with the
* specified radix.
*
* @param sStr
* The string to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
* @since 9.0.0
*/
@Nullable
public static Long parseUnsignedIntObj (@Nullable final String sStr, @Nonnegative final int nRadix, @Nullable final Long aDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Long.valueOf (Integer.parseUnsignedInt (sStr, nRadix) & 0xffff_ffffL);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
// ---[long]---
/**
* Parse the given {@link Object} as long with radix {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the object does not represent a valid value.
*/
public static long parseLong (@Nullable final Object aObject, final long nDefault)
{
return parseLong (aObject, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link Object} as long with the specified radix.
*
* @param aObject
* The object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the object does not represent a valid value.
*/
public static long parseLong (@Nullable final Object aObject, @Nonnegative final int nRadix, final long nDefault)
{
if (aObject == null)
return nDefault;
if (aObject instanceof Number)
return ((Number) aObject).longValue ();
return parseLong (aObject.toString (), nRadix, nDefault);
}
/**
* Parse the given {@link String} as long with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default if the string does not represent a valid value.
*/
public static long parseLong (@Nullable final String sStr, final long nDefault)
{
return parseLong (sStr, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link String} as long with the specified radix.
*
* @param sStr
* The string to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default if the string does not represent a valid value.
*/
public static long parseLong (@Nullable final String sStr, @Nonnegative final int nRadix, final long nDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Long.parseLong (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return nDefault;
}
/**
* Parse the given {@link Object} as {@link Long} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Long parseLongObj (@Nullable final Object aObject)
{
return parseLongObj (aObject, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link Object} as {@link Long} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @param aDefault
* The default value to be returned if the passed object cannot be
* converted to a Long. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Long parseLongObj (@Nullable final Object aObject, @Nullable final Long aDefault)
{
return parseLongObj (aObject, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link Object} as {@link Long} with the specified radix.
*
* @param aObject
* The object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed object cannot be
* converted to a Long. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Long parseLongObj (@Nullable final Object aObject, @Nonnegative final int nRadix, @Nullable final Long aDefault)
{
if (aObject == null)
return aDefault;
if (aObject instanceof Number)
return Long.valueOf (((Number) aObject).longValue ());
return parseLongObj (aObject.toString (), nRadix, aDefault);
}
/**
* Parse the given {@link String} as {@link Long} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static Long parseLongObj (@Nullable final String sStr)
{
return parseLongObj (sStr, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link String} as {@link Long} with radix
* {@link #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Long parseLongObj (@Nullable final String sStr, @Nullable final Long aDefault)
{
return parseLongObj (sStr, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link String} as {@link Long} with the specified radix.
*
* @param sStr
* The string to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Long parseLongObj (@Nullable final String sStr, @Nonnegative final int nRadix, @Nullable final Long aDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Long.valueOf (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
// ---[short]---
/**
* Parse the given {@link Object} as short with radix {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the object does not represent a valid value.
*/
public static short parseShort (@Nullable final Object aObject, final short nDefault)
{
return parseShort (aObject, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link Object} as short with the specified radix.
*
* @param aObject
* The object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default value if the object does not represent a valid value.
*/
public static short parseShort (@Nullable final Object aObject, @Nonnegative final int nRadix, final short nDefault)
{
if (aObject == null)
return nDefault;
if (aObject instanceof Number)
return ((Number) aObject).shortValue ();
return parseShort (aObject.toString (), nRadix, nDefault);
}
/**
* Parse the given {@link String} as short with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default if the string does not represent a valid value.
*/
public static short parseShort (@Nullable final String sStr, final short nDefault)
{
return parseShort (sStr, DEFAULT_RADIX, nDefault);
}
/**
* Parse the given {@link String} as short with the specified radix.
*
* @param sStr
* The string to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param nDefault
* The default value to be returned if the passed object could not be
* converted to a valid value.
* @return The default if the string does not represent a valid value.
*/
public static short parseShort (@Nullable final String sStr, @Nonnegative final int nRadix, final short nDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Short.parseShort (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return nDefault;
}
/**
* Parse the given {@link Object} as {@link Short} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @return null if the object does not represent a valid value.
*/
@Nullable
public static Short parseShortObj (@Nullable final Object aObject)
{
return parseShortObj (aObject, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link Object} as {@link Short} with radix
* {@value #DEFAULT_RADIX}.
*
* @param aObject
* The object to parse. May be null.
* @param aDefault
* The default value to be returned if the passed object cannot be
* converted to a Short. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Short parseShortObj (@Nullable final Object aObject, @Nullable final Short aDefault)
{
return parseShortObj (aObject, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link Object} as {@link Short} with the specified radix.
*
* @param aObject
* The object to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed object cannot be
* converted to a Short. May be null.
* @return aDefault if the object does not represent a valid
* value.
*/
@Nullable
public static Short parseShortObj (@Nullable final Object aObject, @Nonnegative final int nRadix, @Nullable final Short aDefault)
{
if (aObject == null)
return aDefault;
if (aObject instanceof Number)
return Short.valueOf (((Number) aObject).shortValue ());
return parseShortObj (aObject.toString (), nRadix, aDefault);
}
/**
* Parse the given {@link String} as {@link Short} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static Short parseShortObj (@Nullable final String sStr)
{
return parseShortObj (sStr, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link String} as {@link Short} with radix
* {@link #DEFAULT_RADIX}.
*
* @param sStr
* The string to parse. May be null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Short parseShortObj (@Nullable final String sStr, @Nullable final Short aDefault)
{
return parseShortObj (sStr, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link String} as {@link Short} with the specified radix.
*
* @param sStr
* The string to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static Short parseShortObj (@Nullable final String sStr, @Nonnegative final int nRadix, @Nullable final Short aDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return Short.valueOf (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
// ---[BigInteger]---
/**
* Parse the given {@link String} as {@link BigInteger} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The String to parse. May be null.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static BigInteger parseBigInteger (@Nullable final String sStr)
{
return parseBigInteger (sStr, DEFAULT_RADIX, null);
}
/**
* Parse the given {@link String} as {@link BigInteger} with the specified
* radix.
*
* @param sStr
* The String to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static BigInteger parseBigInteger (@Nullable final String sStr, @Nonnegative final int nRadix)
{
return parseBigInteger (sStr, nRadix, null);
}
/**
* Parse the given {@link String} as {@link BigInteger} with radix
* {@value #DEFAULT_RADIX}.
*
* @param sStr
* The String to parse. May be null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static BigInteger parseBigInteger (@Nullable final String sStr, @Nullable final BigInteger aDefault)
{
return parseBigInteger (sStr, DEFAULT_RADIX, aDefault);
}
/**
* Parse the given {@link String} as {@link BigInteger} with the specified
* radix.
*
* @param sStr
* The String to parse. May be null.
* @param nRadix
* The radix to use. Must be ≥ {@link Character#MIN_RADIX} and ≤
* {@link Character#MAX_RADIX}.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static BigInteger parseBigInteger (@Nullable final String sStr, @Nonnegative final int nRadix, @Nullable final BigInteger aDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return new BigInteger (sStr, nRadix);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
// ---[BigDecimal]---
/**
* Parse the given {@link String} as {@link BigDecimal}.
*
* @param sStr
* The String to parse. May be null.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static BigDecimal parseBigDecimal (@Nullable final String sStr)
{
return parseBigDecimal (sStr, null);
}
/**
* Parse the given {@link String} as {@link BigDecimal}.
*
* @param sStr
* The String to parse. May be null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static BigDecimal parseBigDecimal (@Nullable final String sStr, @Nullable final BigDecimal aDefault)
{
if (sStr != null && sStr.length () > 0)
try
{
return new BigDecimal (_getUnifiedDecimal (sStr));
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
/**
* Parse the given {@link String} as {@link BigDecimal}.
*
* @param sStr
* The String to parse. May be null.
* @param nScale
* The scaling (decimal places) to be used for the result. Must be ≥
* 0!
* @param eRoundingMode
* The rounding mode to be used to achieve the scale. May not be
* null.
* @return null if the string does not represent a valid value.
*/
@Nullable
public static BigDecimal parseBigDecimal (@Nullable final String sStr,
@Nonnegative final int nScale,
@Nonnull final RoundingMode eRoundingMode)
{
return parseBigDecimal (sStr, nScale, eRoundingMode, null);
}
/**
* Parse the given {@link String} as {@link BigDecimal}.
*
* @param sStr
* The String to parse. May be null.
* @param nScale
* The scaling (decimal places) to be used for the result. Must be ≥
* 0!
* @param eRoundingMode
* The rounding mode to be used to achieve the scale. May not be
* null.
* @param aDefault
* The default value to be returned if the passed string could not be
* converted to a valid value. May be null.
* @return aDefault if the string does not represent a valid
* value.
*/
@Nullable
public static BigDecimal parseBigDecimal (@Nullable final String sStr,
@Nonnegative final int nScale,
@Nonnull final RoundingMode eRoundingMode,
@Nullable final BigDecimal aDefault)
{
ValueEnforcer.isGE0 (nScale, "Scale");
ValueEnforcer.notNull (eRoundingMode, "RoundingMode");
if (sStr != null && sStr.length () > 0)
try
{
return new BigDecimal (_getUnifiedDecimal (sStr)).setScale (nScale, eRoundingMode);
}
catch (final NumberFormatException ex)
{
// Fall through
}
return aDefault;
}
// ---[check methods]---
/**
* Checks if the given string is a numeric string that can be converted to a
* long value with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to check. May be null.
* @return true if the value can be converted to a valid value
*/
public static boolean isInt (@Nullable final String sStr)
{
if (sStr != null)
try
{
Integer.parseInt (sStr, DEFAULT_RADIX);
return true;
}
catch (final NumberFormatException ex)
{
// fall through
}
return false;
}
/**
* Checks if the given string is a numeric string that can be converted to a
* long value with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to check. May be null.
* @return true if the value can be converted to a valid value
*/
public static boolean isLong (@Nullable final String sStr)
{
if (sStr != null)
try
{
Long.parseLong (sStr, DEFAULT_RADIX);
return true;
}
catch (final NumberFormatException ex)
{
// fall through
}
return false;
}
/**
* Checks if the given string is a numeric string that can be converted to an
* unsigned long value with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to check. May be null.
* @return true if the value can be converted to a valid value
*/
public static boolean isUnsignedInt (@Nullable final String sStr)
{
if (sStr != null)
try
{
Integer.parseUnsignedInt (sStr, DEFAULT_RADIX);
return true;
}
catch (final NumberFormatException ex)
{
// fall through
}
return false;
}
/**
* Checks if the given string is a numeric string that can be converted to an
* unsigned long value with radix {@value #DEFAULT_RADIX}.
*
* @param sStr
* The string to check. May be null.
* @return true if the value can be converted to a valid value
*/
public static boolean isUnsignedLong (@Nullable final String sStr)
{
if (sStr != null)
try
{
final long ret = Long.parseLong (sStr, DEFAULT_RADIX);
return ret >= 0;
}
catch (final NumberFormatException ex)
{
// fall through
}
return false;
}
/**
* Checks if the given string is a double string that can be converted to a
* double value.
*
* @param sStr
* The string to check. May be null.
* @return true if the value can be converted to a valid value
*/
public static boolean isDouble (@Nullable final String sStr)
{
return !Double.isNaN (parseDouble (sStr, Double.NaN));
}
/**
* Checks if the given string is a float string that can be converted to a
* double value.
*
* @param sStr
* The string to check. May be null.
* @return true if the value can be converted to a valid value
*/
public static boolean isFloat (@Nullable final String sStr)
{
return !Float.isNaN (parseFloat (sStr, Float.NaN));
}
}