autoboxing

Autoboxing1.java

public class Autoboxing1 {

    public static void main(String[] args) {

        Integer a = new Integer(5);
        int b = 10;
        Autoboxing1 ab = new Autoboxing1();
        System.out.println(ab.sum(a.intValue(), b));
    }

    public int sum(int a, int b) {

        return  a + b;
    }
}

Autoboxing2.java

package lesson4;

public class Autoboxing2 {

    public static void main(String[] args) {

        Integer a = 5;
        int b = 10;
        Integer c = new Integer(33);
        Autoboxing2 ab = new Autoboxing2();
        System.out.println(ab.sum(c, b));
        a = ab.sum(a, b);
        System.out.println(ab.sum(a, b));
    }

    public int sum(int a, int b) {

        return  a + b;
    }
}