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  :   [email protected]

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 [] { 1, 2, 3, 4 }));     System.out.println(ArrayUtils.getLength(new boolean [] { false , true }));     System.out.println(ArrayUtils.getLength(new Object [] { null }));   } }

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