Basic example of AutoBoxing and Unboxing in Java


Here is the simple program for printing basic example of AutoBoxing and Unboxing in Java.

Source Code

import java.io.*;
import java.util.Stack;
class stacks
{
  public static void main(String args[])
  {
   Stack mystack = new Stack();
   mystack.push(new Integer(10));
   mystack.push(new Integer(20));
   Integer a=(Integer)mystack.pop();
   Integer b=(Integer)mystack.pop();
   int c=a.intValue()+b.intValue();
   System.out.print("\nTotal : "+c);
   //J2SE 5.0
   Stack<Integer>ustack =new Stack<Integer>();
   ustack.push(10);// Autobox
   ustack.push(40);
   int x=ustack.pop()+ustack.pop();  // Unbox
   System.out.print("\nTotal : "+x);
  }
}
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Output

Total : 30
Total : 50


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