28.Program for swap in java

class swap1

{

            int a,b;

            void GetAll(int i,int j)

            {

                        a=i;

                        b=j;

                       

            }

            void swap()

            {

                        a=a+b;

                        b=a-b;

                        a=a-b;

            }

            void ShowAll()

            {

                        System.out.println("a="+a+","+"b="+b);

            }

}

class swapf

{

            public static void main(String args[])

            {

                        swap1 ob=new swap1();

                        ob.GetAll(2,3);

                        ob.swap();

                        ob.ShowAll();

            }

}