O negosso

package pacote;
import java.awt.Toolkit;

import javax.swing.JFrame;
public class Classinha {
	public static void main(String[] args) {
		JFrame j = new JFrame("janelinhaaaa");
		j.setSize(300,300); j.setVisible(true); j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);j.setResizable(false);
		double d = Toolkit.getDefaultToolkit().getScreenSize().getHeight();
		double d2 = Toolkit.getDefaultToolkit().getScreenSize().getWidth();
		int up = 0;int right = 0;int rb = 0;int ub = 0;
		while (true) {
			//System.out.println(j.getLocation()+" "+d+" "+d2+ " "+up+" "+right);

			int x = j.getLocation().x;
			int y = j.getLocation().y;
			if (x == 0 && y == 0) {
				up = 1;right = 1;ub = 1;rb = 1;
				while (cdt(x,y,up,right)) {
					j.setLocation(x + right, y + up);
					x = j.getLocation().x;
					y = j.getLocation().y;
					try {
						Thread.sleep(5);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					System.out.println(1+" "+j.getLocation()+" "+d+" "+d2+" "+up+" "+right);
				}
			} else if (y == 468 && x != 1066) {
				up = -ub;
				while (cdt(x,y,up,right)) {
					j.setLocation(x + right, y + up);
					x = j.getLocation().x;
					y = j.getLocation().y;
					try {
						Thread.sleep(5);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					System.out.println(2+" "+j.getLocation()+" "+d+" "+d2+" "+up+" "+right);
				}

			} else if (y == 0) {
				up = -ub;
				while (cdt(x,y,up,right)) {
					j.setLocation(x + right, y + up);
					x = j.getLocation().x;
					y = j.getLocation().y;
					try {
						Thread.sleep(5);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					System.out.println(3+" "+j.getLocation()+" "+d+" "+d2+" "+up+" "+right);
				}
			} else if (x == 1066) {
				right = - rb;
				while (cdt(x,y,up,right)) {
					j.setLocation(x + right, y + up);
					x = j.getLocation().x;
					y = j.getLocation().y;
					try {
						Thread.sleep(5);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					System.out.println(4+" "+j.getLocation()+" "+d+" "+d2+" "+up+" "+right);
				}
			} else if (x == 0) {
				right = - rb;
				while (cdt(x,y,up,right)) {
					j.setLocation(x + right, y + up);
					x = j.getLocation().x;
					y = j.getLocation().y;
					try {
						Thread.sleep(5);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					System.out.println(4+" "+j.getLocation()+" "+d+" "+d2+" "+up+" "+right);
				}
			}
			rb = right;ub = up;
		}

	}
	public static boolean cdt(int x,int y,int uu,int rr) {
		if (x == 0 && y == 0) {
			return true;
		}
		if (rr == 1 && uu == 1) {
			return x<1066 && y<468;
		} else if (rr == -1 && uu == 1) {
			return x > 0 && y < 468;
		} else if (rr == 1 && uu == -1) {
			return x<1066 && y>0;
		} else if (rr == -1 && uu == -1) {
			return x > 0 && y>0;
		}
		return false;
	}
}