Qual o melhor método/classe pra esperar?

for(int i =0; i<10; i++){
    carregaimagem(i);
    melhorjeitode parar();
    }

import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class InterfaceGrafica extends JFrame {

	protected JPanel painelPrincipal;
	protected Vector<Casas> casas;
	protected Color cor;
	protected int ultimox, ultimoy;
	
	
	public InterfaceGrafica() {

		casas = new Vector<Casas>();
		painelPrincipal = new JPanel();
		painelPrincipal.setLayout(new GridLayout(8, 8));
		ultimox = 0;
		ultimoy = 0;
	

		for (int i = 0; i < 64; i++) {
			casas.add(new Casas());
			casas.get(i).addMouseListener(new MouseListener() {

				public void mouseEntered(MouseEvent e) {
					cor = e.getComponent().getBackground();
					e.getComponent().setBackground(Color.YELLOW);
				}

				public void mouseExited(MouseEvent e) {
					e.getComponent().setBackground(cor);
				}

				public void mouseClicked(MouseEvent e) {
					for (int i = 0; i <= ((Casas) e.getComponent())
							.getPosicaoY(); i++) {
						for (int j = 0; j <= ((Casas) e.getComponent())
								.getPosicaoX(); j++) {
							cor = casas.get(i * 8 + j).getBackground();
							casas.get(i * 8 + j).setBackground(Color.RED);
							 try {Thread.sleep(50);} catch
							 (InterruptedException e1)
							 {System.out.println("deu erro");}
							 casas.get(i*8 +j).setBackground(cor);
						}
					}

					ultimox = ((Casas) e.getComponent()).getPosicaoX();
					ultimoy = ((Casas) e.getComponent()).getPosicaoY();
					System.out.println("x: " + ultimox + "\ny: " + ultimoy);

				}

				public void mousePressed(MouseEvent arg0) {
				}

				public void mouseReleased(MouseEvent arg0) {
				}
			});

			if (((((i < 8) | ((i > 16) & (i < 24)) | ((i > 32) & (i < 40)) | ((i > 48) & (i < 56))) & (i % 2 == 1)))
					| (((((i > 7) & (i < 15)) | ((i > 23) & (i < 31))
							| ((i > 39) & (i < 47)) | (i > 55)) & (i % 2 == 0)))) {
				casas.get(i).setBackground(Color.BLACK);
			} else {
				casas.get(i).setBackground(Color.WHITE);
			}
		}

		for (int i = 0; i < 8; i++) {
			for (int j = 0; j < 8; j++) {
				painelPrincipal.add(casas.get(i * 8 + j));
				casas.get(i * 8 + j).setX(j);
				casas.get(i * 8 + j).setY(i);
			}
		}

		add(painelPrincipal);
		setSize(400, 400);
		setLocation(300, 150);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		setVisible(true);

	}

	public static void main(String[] args) {

		InterfaceGrafica jogo = new InterfaceGrafica();

	}

}



public class Casas extends JPanel {
	private int x, y;

	public Casas() {
	}

	public void setX(int x) {
		this.x = x;
	}

	public void setY(int y) {
		this.y = y;
	}

	public int getPosicaoX() {
		return this.x;
	}

	public int getPosicaoY() {
		return this.y;
	}

}