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/**
* Copyright [2013-2014] eBay Software Foundation
*
* 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 ml.shifu.guagua.util;
/**
* Util class to parse int, long or any other type.
*/
public final class NumberFormatUtils {
/** Do not instantiate. */
private NumberFormatUtils() {
}
/**
* Parse string object to int type.
*
* @param str
* string needed to be parsed
* @param defaultValue
* default value
*/
public static int getInt(String str, int defaultValue) {
return getInt(str, false, defaultValue);
}
/**
* Parse string object to int type. If invalid format, use 0 to replace.
*
* @param str
* string needed to be parsed
*/
public static int getInt(String str) {
return getInt(str, false, 0);
}
/**
* Parse string object to int type.
*
* @param str
* string needed to be parsed
* @param required
* if required, should be parsed successfully without default value to replace; else use 0 as default
* value.
* @throws Exception
* if invalid format with required set 'true'
*/
public static int getInt(String str, boolean required) {
return getInt(str, required, 0);
}
/**
* Parse string object to int type.
*
* @param str
* string needed to be parsed
* @param required
* if required, should be parsed successfully without default value to replace; else use default value.
* @param defaultValue
* default value
* @throws IllegalArgumentException
* if invalid format with required set 'true'
*/
public static int getInt(String str, boolean required, int defaultValue) {
try {
return Integer.valueOf(str);
} catch (Exception e) {
if(required) {
throw new IllegalArgumentException("Not a valid input", e);
} else {
return defaultValue;
}
}
}
/**
* Parse string object to long type.
*
* @param str
* string needed to be parsed
* @param defaultValue
* default value
*/
public static long getLong(String str, long defaultValue) {
return getLong(str, false, defaultValue);
}
/**
* Parse string object to long type. If invalid format, use 0 to replace.
*
* @param str
* string needed to be parsed
*/
public static long getLong(String str) {
return getLong(str, false, 0);
}
/**
* Parse string object to long type. If invalid format, use 0 to replace.
*
* @param str
* string needed to be parsed
* @param required
* if required, should be parsed successfully without default value to replace
* @throws IllegalArgumentException
* if invalid format with required set 'true'
*/
public static long getLong(String str, boolean required) {
return getLong(str, required, 0);
}
/**
* Parse string object to long type.
*
* @param str
* string needed to be parsed
* @param required
* if required, should be parsed successfully without default value to replace; else use default value.
* @param defaultValue
* default value
* @throws Exception
* if invalid format with required set 'true'
*/
public static long getLong(String str, boolean required, long defaultValue) {
try {
return Long.valueOf(str);
} catch (Exception e) {
if(required) {
throw new IllegalArgumentException("Not a valid input", e);
} else {
return defaultValue;
}
}
}
/**
* Parse string object to double type.
*
* @param str
* string needed to be parsed
* @param defaultValue
* default value
*/
public static double getDouble(String str, double defaultValue) {
return getDouble(str, false, defaultValue);
}
/**
* Parse string object to double type. If invalid format, use 0 to replace.
*
* @param str
* string needed to be parsed
*/
public static double getDouble(String str) {
return getDouble(str, false, 0.0d);
}
/**
* Parse string object to double type. If invalid format, use 0 to replace.
*
* @param str
* string needed to be parsed
* @param required
* if required, should be parsed successfully without default value to replace
* @throws Exception
* if invalid format with required set 'true'
*/
public static double getDouble(String str, boolean required) {
return getDouble(str, required, 0.0d);
}
/**
* Parse string object to double type.
*
* @param str
* string needed to be parsed
* @param required
* if required, should be parsed successfully without default value to replace; else use default value.
* @param defaultValue
* default value
* @throws IllegalArgumentException
* if invalid format with required set 'true'
*/
public static double getDouble(String str, boolean required, double defaultValue) {
try {
return Double.valueOf(str);
} catch (Exception e) {
if(required) {
throw new IllegalArgumentException("Not a valid input", e);
} else {
return defaultValue;
}
}
}
}
