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 Tools and Libs > Commons Lang3 > Classes > Primitive to Wrapper Class

Primitive to Wrapper Class 

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 ClassUtils.primitiveToWrapper() API. It returns the wrapper class object associated with the given primitive class.

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

import java.util.Arrays;

import org.apache.commons.lang3.ClassUtils;

public class PrimitiveToWrapperClsTest {

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

    Class<?> intClazz = ClassUtils.primitiveToWrapper(int.class);
    System.out.println(intClazz);

    Class<?> charClazz = ClassUtils.primitiveToWrapper(char.class);
    System.out.println(charClazz);
    
    Class<?> [] wrapperClasses = 
      ClassUtils.primitivesToWrappers(short.class, long.class);
    System.out.println(Arrays.toString(wrapperClasses));

  }

}
   

It gives the following output,
class java.lang.Integer
class java.lang.Character
[class java.lang.Short, class java.lang.Long]


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