What is encapsulation in java

What is encapsulation in java:
=========================

Encapsulation is the process of wrapping the data in to a single unit or container.
Every java class is an example of encapsulation.

package blog;

class Test1

{

int a;

String str;

Test1(int a,String str)

{

this();//calling current class default constructor

this.a=a;

this.str=str;

}

Test1()

{

System.out.println("default constructor");

}

}

class Test2 extends Test1

{

      int a,c;

      String str;

      Test2(int a,String str,int c)

      {

   super();//calling super class constructor

   this.a=a;

   this.str=str;

   this.c=c;

     }

}

public class ThisSuperDemo {

public static void main(String[] args) {

Test1 test1 =  new Test1(80,"selenium");

Test2 test2 = new Test2(10,"Ramesh Selenium",90);

System.out.println(test2.a);

System.out.println(test2.c);

System.out.println(test2.str);

}

}