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 Tools and Libs > Commons Lang3 > Strings > Left

Left 

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  :  kvenkatasudhakar@gmail.com
   
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))//""
  }

}
   

It gives the following output,
ab
abcd
abcdef
null





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