package com.tj;

 public class MyClass2 {

     public static void main(String[] args) {

         Class cls = java.lang.String.class;

         Package pkg = cls.getPackage();

         String name = pkg.getName();

         System.out.println(name);

         cls = MyClass2.class;

         pkg = cls.getPackage();

         name = pkg.getName();

         System.out.println(name);

         pkg = int.class.getPackage();

         System.out.println(pkg);

         pkg = int[].class.getPackage();

         System.out.println(pkg);

     }

 }