import java.util.*;

public class AutoboxingExample {

    public static void main (String[] argv)
    {
        // One of each.
        Integer I = 5;
        int j = 6;

        // Mixed sum of Integer and int:
        Integer K = I * j;

        // Use of Integer's with comparison operators:
        if (K == 30) {
            System.out.println ("K=30");
        }

        // Here, I gets converted to an int. The return type of
        // add() is an Integer, which gets converted to the int "sum".
        int sum = add (I, j);
        System.out.println ("Sum=" + sum);
    }


    static Integer add (int a, int b)
    {
        // Automatic conversion to Integer of result.
        return (a + b);
    }
    
    
}