class Example {
private int x,y;
void f1(int x,int y) {
this.x=x;
this.y=y;
}
void display() {
System.out.println(x);
System.out.println(y);
}
}
class ThisK {
public static void main(String[] args) {
Example e1 = new Example();
e1.f1(10,20);
e1.display();
}
}