BE THE CODER > Tools and Libs > Commons Lang3 Examples > Strings

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.left() API. It returns the leftmost length characters of given String.

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


package com.bethecoder.tutorials.commons_lang.tests.strings;



import org.apache.commons.lang3.StringUtils;



public class LeftTest {



  /**

   * @param args

   */

  public static void main(String[] args) {



    System.out.println(StringUtils.left("abcdefg", 2)); //ab

    System.out.println(StringUtils.left("abcdefg", 4)); //abcd

    System.out.println(StringUtils.left("abcdefg", 6)); //abcdef



    System.out.println(StringUtils.left(null, 4));      //null

    System.out.println(StringUtils.left("", 4));        //""

    System.out.println(StringUtils.left("", -1));       //""

    System.out.println(StringUtils.left("abcdefg", -1)); //""

  }



}