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 Tools and Libs > Commons Lang3 > Arrays > Last Index Of Element

Last Index Of Element 

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 ArrayUtils.lastIndexOf() API. It returns the last index of element in the given array if found, otherwise it returns -1.

File Name  :  
com/bethecoder/tutorials/commons_lang/tests/arrays/LastIndexOfTest.java 
Author  :  Sudhakar KV
Email  :  kvenkatasudhakar@gmail.com
   
package com.bethecoder.tutorials.commons_lang.tests.arrays;

import org.apache.commons.lang3.ArrayUtils;

public class LastIndexOfTest {

  /**
   @param args
   */
  public static void main(String[] args) {

    String [] strings = "TWO""ONE""TWO""THREE""TWO""FOUR" };
    int [] ints = 123245672};

    System.out.println(ArrayUtils.lastIndexOf(strings, "TWO"));
    System.out.println(ArrayUtils.lastIndexOf(strings, "FIVE"));
    
    System.out.println(ArrayUtils.lastIndexOf(ints, 2));
    System.out.println(ArrayUtils.lastIndexOf(ints, 9));
  }

}
   

It gives the following output,
4
-1
8
-1


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