[JAVA] Timer e disegno linee

[kainard]

Il programma apre una finestra che genera linee con alcune proprietà randomizzate. Vorrei però far disegnare una linea ogni secondo, come devo usare il timer? non riesco a farlo

import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.event.*;

public class Ex3 extends JFrame{

	public int WIDTH = 400;
	public int HEIGHT = 400;
					
	public Ex3(){
		
		Container c = this.getContentPane();
		this.setBackground(Color.WHITE);
		
		Toolkit tk = Toolkit.getDefaultToolkit();
		int SCREEN_W = tk.getScreenSize().width;
		int SCREEN_H = tk.getScreenSize().height;
		this.setBounds((SCREEN_W - WIDTH)/2,(SCREEN_H - HEIGHT)/2,WIDTH,HEIGHT);
		this.setTitle("Esercizio 1");
		this.setVisible(true);
		Dimension size = getSize();
		
	}
	public void paint(Graphics g){
		Dimension size = getSize();
		int x,y,x1,y1;
		float[] stroke = {2.0f,3.0f,4.0f,5.0f};
		
		 for(int i = 0;i<=100;i++) {
			x = (int)(Math.random()*(size.width-30)); 
			y = (int)(Math.random()*(size.width-30));
			Graphics2D g2d = (Graphics2D)g;
			/* Per ottenere le linee con gradienti
			  Color g1 = new Color((int)(Math.random()*256),(int)(Math.random()*256),(int)(Math.random()*256));
			Color g2 = new Color((int)(Math.random()*256),(int)(Math.random()*256),(int)(Math.random()*256));
			g2d.setPaint(new GradientPaint(x,y,g1,(size.width-30)-x,(size.width-30)-y,g2,true));
			*/
			g.setColor(new Color((int)(Math.random()*256),(int)(Math.random()*256),(int)(Math.random()*256)));
			float s = stroke[(int)(Math.random()*3)];
			g2d.setStroke(new BasicStroke(s));
			g.drawLine(x,y,(size.width-30)-x,(size.width-30)-y);
			
			}
				
		}
	public static void main(String[] args) {
		Ex3 app = new Ex3();
		app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

}