Java String trimAllWhitespace() Utility Method - Trim All Whitespaces from the String

This page contains the source code of String trimAllWhitespace() utility method - Trim all whitespace from the given String: leading, trailing, and in between characters.

Java String trimWhitespace() Utility Method

The following trimWhitespace() utility method trim all whitespace from the given String:
package com.javaguides.strings.utils; public class StringTrimUtil { /**  * Trim <i>all</i> whitespace from the given {@code String}:  * leading, trailing, and in between characters.  * @param str the {@code String} to check  * @return the trimmed {@code String}  * @see java.lang.Character#isWhitespace  */ public static String trimAllWhitespace(String str) { if (!hasLength(str)) { return str; } int len = str.length(); StringBuilder sb = new StringBuilder(str.length()); for (int i = 0; i < len; i++) { char c = str.charAt(i); if (!Character.isWhitespace(c)) { sb.append(c); } } return sb.toString(); } /**  * Check that the given String is neither <code>null</code> nor of length 0.  * Note: Will return <code>true</code> for a String that purely consists of whitespace.  * <p/>  * <code>StringUtils.hasLength(null) == false<br/>  * StringUtils.hasLength("") == false<br/>  * StringUtils.hasLength(" ") == true<br/>  * StringUtils.hasLength("Hello") == true</code>  * <p/>  * Copied from the Spring Framework while retaining all license, copyright and author information.  *  * @param str the String to check (may be <code>null</code>)  * @return <code>true</code> if the String is not null and has length  * @see #hasText(String)  */ public static boolean hasLength(String str) { return (str != null && str.length() > 0); } }

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