Trim To Empty 

Apache Commons Lang 3.0 is a java library with lot of utilities and reusable components. This requires the library commons-lang3-3.0.1.jar to be in classpath. The following example shows using StringUtils.trimToEmpty() API. If the given string is NULL it returns EMPTY, otherwise trims the given string.

File Name  :   com/bethecoder/tutorials/commons_lang/tests/strings/TrimToEmptyTest.java  Author  :   Sudhakar KV Email  :   [email protected]

package com.bethecoder.tutorials.commons_lang.tests.strings; import org.apache.commons.lang3.StringUtils; public class TrimToEmptyTest {   /**    * @param args    */   public static void main(String[] args) {     System.out.println(StringUtils.trimToEmpty(null));          //""     System.out.println(StringUtils.trimToEmpty(""));      //""     System.out.println(StringUtils.trimToEmpty(" "));      //""     System.out.println(StringUtils.trimToEmpty(" BTC     "));   //BTC   } }

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