draw any number of lines on mouse clicks

Drawing N lines when use mouse clicks on JFrame.
java code

/*
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 * and open the template in the editor.
 */
package testgraphices;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.event.MouseInputListener;

public class WindowFrame extends JFrame implements MouseInputListener {

    private Point p1 = new Point();
    private Point p2 = new Point();
    private List list = new ArrayList();
    private Line line;
    private int clicks = 0;

    public WindowFrame() {

        setTitle("Drawing ");
        addMouseListener(this);
        setLocation(100, 100);
        setSize(500, 500);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

    @Override
    public void paint(Graphics g) {
        super.paint(g);
        g.setColor(Color.white);
        g.fillRect(0, 0, 600, 600);
        g.setColor(Color.red);
        Line currLine;
        for (int i = 0; i < list.size(); i++) {
            currLine = (Line) (list.get(i));
            g.drawLine(currLine.getP1().getX(), currLine.getP1().getY(),
                    currLine.getP2().getX(), currLine.getP2().getY());
        }
    }

    public static void main(String[] args) {
        new WindowFrame();
    }

    @Override
    public void mouseClicked(MouseEvent e) {
     
    }

    @Override
    public void mousePressed(MouseEvent e) {
           int x = e.getX();
        int y = e.getY();

        if (clicks == 0) {
            line = new Line();
            line.setP1(new Point(x, y));

            clicks++;
        } else {
            line.setP2(new Point(x, y));
            list.add(line);
            clicks = 0;
        }
        repaint();
    }

    @Override
    public void mouseReleased(MouseEvent e) {
    }

    @Override
    public void mouseEntered(MouseEvent e) {
    }

    @Override
    public void mouseExited(MouseEvent e) {
    }

    @Override
    public void mouseDragged(MouseEvent e) {
    }

    @Override
    public void mouseMoved(MouseEvent e) {
    }
}

class Point {

    private int x;
    private int y;

    public Point() {
    }

    public Point(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

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

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

class Line {

    private Point p1;
    private Point p2;

    public Line() {
    }

    public Line(Point p1, Point p2) {
        this.p1 = p1;
        this.p2 = p2;
    }

    public Point getP1() {
        return p1;
    }

    public Point getP2() {
        return p2;
    }

    public void setP1(Point p1) {
        this.p1 = p1;
    }

    public void setP2(Point p2) {
        this.p2 = p2;
    }
}

Attachments

Line.gif (8.79 KiB) Viewed 6612 times