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 Tools and Libs > Commons Lang3 > Arrays > Get Array Length

Get Array Length 

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.getLength() API. It returns the length of the array, if the array is null returns ZERO.

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

import org.apache.commons.lang3.ArrayUtils;

public class GetLengthTest {

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

    System.out.println(ArrayUtils.getLength(null));
    System.out.println(ArrayUtils.getLength(new int [] {}));
    System.out.println(ArrayUtils.getLength(new int [] { 123}));
    System.out.println(ArrayUtils.getLength(new boolean [] { false true }));
    System.out.println(ArrayUtils.getLength(new Object [] { null }));
  }

}
   

It gives the following output,
0
0
4
2
1


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