Java Class getPackage() Method

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Description

The Java Class getPackage() method gets the package for this class. The class loader of this class is used to find the package. If the class was loaded by the bootstrap class loader the set of packages loaded from CLASSPATH is searched to find the package of the class. Null is returned if no package object was created by the class loader of this class.

Declaration

Following is the declaration for java.lang.Class.getPackage() method

public Package getPackage()

Parameters

NA

Return Value

This method returns the package of the class, or null if no package information is available from the archive or codebase.

Exception

NA

Getting Package of a Class Example

The following example shows the usage of java.lang.Class.getPackage() method. In this program, we've created an instance of ClassDemo and then using getClass() method, the class of the instance is retrieved. Using getPackage(), we've retrieved the Package of the class and then printed it.

package com.tutorialspoint;

public class ClassDemo {

   public static void main(String[] args) {

      ClassDemo classDemo = new ClassDemo();
      Class cls = classDemo.getClass();

      // returns the name and package of the class
      System.out.println("Class = " + cls.getName());
      System.out.println("Package = " + cls.getPackage());
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

Class = com.tutorialspoint.ClassDemo
Package = package com.tutorialspoint

Getting Package of Integer Example

The following example shows the usage of java.lang.Class.getPackage() method. In this program, we've used class of Integer. Using getPackage(), we've retrieved the Package of the class and then printed it.

package com.tutorialspoint;

public class ClassDemo {

   public static void main(String[] args) {

      Class cls = Integer.class;

      // returns the name and package of the class
      System.out.println("Class = " + cls.getName());
      System.out.println("Package = " + cls.getPackage());
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

Class = java.lang.Integer
Package = package java.lang

Getting Package of ArrayList Example

The following example shows the usage of java.lang.Class.getPackage() method. In this program, we've used class of ArrayList. Using getPackage(), we've retrieved the Package of the class and then printed it.

package com.tutorialspoint;

import java.util.ArrayList;

public class ClassDemo {

   public static void main(String[] args) {

      Class cls = ArrayList.class;

      // returns the name and package of the class
      System.out.println("Class = " + cls.getName());
      System.out.println("Package = " + cls.getPackage());
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

Class = java.util.ArrayList
Package = package java.util