Mouse Click and Drawing

import java.awt.event.MouseListener;

import java.awt.event.MouseEvent;

import javax.swing.JFrame;

import java.awt.*;

public class RectangleViewer {

public static void main(String[] args){

final RectangleComponent component = new RectangleComponent();

// Add Mouse Press Listener

class MousePressListener implements MouseListener {

public void mousePressed(MouseEvent event){

int x = event.getX();

int y = event.getY();

// how draw an oval or a line

// vsg here you have a component

Graphics g = component.getGraphics();

component.drawline(g,x,y);

System.out.println("in mousePressed");

}

public void mouseReleased(MouseEvent event){}

public void mouseClicked(MouseEvent event){}

public void mouseEntered(MouseEvent event){}

public void mouseExited(MouseEvent event){}

}

MouseListener listener = new MousePressListener();

component.addMouseListener(listener);

JFrame frame = new JFrame();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

frame.add(component);

}

}

/* new class */

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.Color;

import javax.swing.JApplet;

import javax.swing.JComponent;

// Remember to run this program as an Applet

public class RectangleComponent extends JComponent{

private double myX; // the x coordinate of the rectangle

private double myY; // the y coordinate of the rectangle

private double myWidth; // the width of the rectangle

private double myHeight; // the height of the rectangle

public Graphics g;

// This creates a no-argument constructor

public RectangleComponent(){

System.out.println("got to RecComponent constructor");

myX = 100;

myY = 100;

myWidth = 100;

myHeight = 100;

// this is the magic where paintComponent should be called

// automatically

}

// a stub that needs to be filled in by you

public double getPerimeter(){

double temp= 0.0;

return temp;

}

// Calculates and returns the are of the rectangle.

// a stub that needs to be filled in by you

public double getArea(){

double temp= 0.0;

return temp;

}

public void drawline(Graphics g, int x, int y){

g.drawLine(x, y, 200, 200);

}

// to call paint it needs to be overwritten

// a small beginning.

public void paintComponent(Graphics g){

System.out.println("got to paintComponent");

// draw a big rectangle using the Graphics class

super.paintComponent(g);

g.setColor(Color.red);

g.drawRect(100, 100, 300, 300);

// g.drawLine(x, , 99, 99);

}

}