Null to Empty 

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.nullToEmpty() API. It converts the null reference to empty reference.

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

package com.bethecoder.tutorials.commons_lang.tests.arrays; import org.apache.commons.lang3.ArrayUtils; public class NullToEmptyTest {   /**    * @param args    */   public static void main(String[] args) {     String [] strings = null;     int [] ints = null;     strings = ArrayUtils.nullToEmpty(strings);     ints = ArrayUtils.nullToEmpty(ints);          System.out.println("String array length : " + strings.length);     System.out.println("Integer array length : " + ints.length);   } }

String array length : 0
Integer array length : 0