Program to use Simple Wrapper Class in Java

//  Program to use Simple Wrapper Class.
class  Wrapper1
{
public static void main( String args[ ] )
{
 // Boxing
 Integer  iOb = new Integer(100);
 // Unboxing
 int i = iOb.intValue();
 System.out.println(i + " : " + iOb); 
}
}

Output:
100 : 100