class Ponto {
int x;
int y;
}

public class TestePontos {
public static void main(String[] args) {
int x1 = 10, y1 = 10;
int x2 = x1, y2 = y1;
x2 *= 2;
y2 *= 2;

Ponto p1 = new Ponto();
p1.x = x1;
p1.y = y1;
Ponto p2 = p1;
p2.x = x2 * 2;
p2.y = y2 * 2;

for (int n : new int[] {x1, y1, x2, y2, p1.x, p1.y, p2.x, p2.y})
System.out.print(n + " ");
}
}