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 Tools and Libs > Commons Lang3 > Arrays > Object Array to Primitive Array

Object Array to Primitive Array 

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.toPrimitive() API. It converts an array of objects to primitives.

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

import org.apache.commons.lang3.ArrayUtils;

public class ToPrimitiveTest {

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

    Integer [] intObjs = new Integer[] {
      new Integer(6), null, new Integer(8), null, new Integer(4)  
    };
    
    int [] ints = ArrayUtils.toPrimitive(intObjs, -1);
    System.out.println(ArrayUtils.toString(ints));
  }

}
   

It gives the following output,
{6,-1,8,-1,4}


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