com.microsoft.sqlserver.jdbc.StringUtils Maven / Gradle / Ivy
/*
* Microsoft JDBC Driver for SQL Server Copyright(c) Microsoft Corporation All rights reserved. This program is made
* available under the terms of the MIT License. See the LICENSE file in the project root for more information.
*/
package com.microsoft.sqlserver.jdbc;
/**
* Provides a utility class for Strings.
*
* @since 6.1.2
*/
public class StringUtils {
/**
* string containing a space
*/
public static final String SPACE = " ";
/**
* empty string
*/
public static final String EMPTY = "";
/**
* Developer should not create {@code StringUtils} instance in standard programming. Instead, the class should be
* used as {@code StringUtils.isEmpty("String")}
*/
private StringUtils() {
// Hiding constructor.
}
/**
* Returns if String is null
*
* @param charSequence
* {@link CharSequence} Can provide null
* @return {@link Boolean} if provided char sequence is null or empty / blank
* @since 6.1.2
*/
public static boolean isEmpty(final CharSequence charSequence) {
return charSequence == null || charSequence.length() == 0;
}
/**
* Returns if String is numeric or not.
*
* @param str
* {@link String}
* @return {@link Boolean} if provided String is numeric or not.
*/
public static boolean isNumeric(final String str) {
return !isEmpty(str) && str.matches("\\d+(\\.\\d+)?");
}
/**
* Returns if string is integer or not
*
* @param str
* {@link String}
* @return {@link Boolean} if provided String is Integer or not.
*/
public static boolean isInteger(final String str) {
try {
Integer.parseInt(str);
return true;
} catch (NumberFormatException e) {
// Nothing. this is not integer.
}
return false;
}
}