Ejercicio

class Ejercicio {

    public static void main (String [] args){
        Clase1 obj1= new Clase1(5,4);
        System.out.print(obj1.modificar(4)+" ");

        Clase1 obj2= new Clase1(5,4);
        System.out.print(obj2.modificar(5)+" ");

        obj2=obj1;

        System.out.println(obj2.modificar(5)+" ");
    }

    class Clase1{

        int p1,p2;
        public Clase1 (int i, int j){
        p1=i; p2=j;
    }

    public int modificar(int i){
        p1=p1+i;
        p2=p2+i;
        System.out.print(p2+" ");
        return p1;
    }
}