::::::::::::::
DrawCanvas.java
::::::::::::::
import java.awt.*;
import java.applet.*;

public class DrawCanvas extends Canvas {

	Graphics g;
	String curMode="Rect";
	mPoint curObj;
	public boolean fill=true;
	mPoint objList[]=new mPoint[100];
	int index=0;


	public DrawCanvas() {
		
		super();
		setBackground(Color.blue);
		setForeground(Color.yellow);
	} 

	public void setDrawMode(String s) {
		if(s.equals("Clear")) {
			index=0;
			repaint();
		} else if(s.equals("Redraw")) repaint();
		else curMode=s;
	}

	public void paint(Graphics g) {

		g.setColor(Color.yellow);
		super.paint(g);
		for(int i=0; i<index; i++)
			objList[i].draw(g);
	}

	public boolean mouseDown(Event e, int x, int y) {		
		
		if (curMode.equals("Rect")) curObj=new mRectangle(x, y, x, y);
		else if (curMode.equals("Circ")) curObj=new mCircle(x, y, x, y);
		else if (curMode.equals("Line")) curObj=new mLine(x, y, x+1, y+1);
		else if (curMode.equals("Round")) curObj=new mRound(x, y, x, y);
		return true;
	}

	public boolean mouseDrag(Event e, int x, int y) {

		g=getGraphics();
		g.setXORMode(Color.black);
		curObj.draw(g);
		curObj.setEnds(x, y);
		curObj.draw(g);

		return true;
	}

	public boolean mouseUp(Event e, int x, int y) {		

		g=getGraphics();
		g.setPaintMode();
		curObj.setEnds(x, y);
		curObj.setFill(fill);
		objList[index++]=curObj;
		curObj.draw(g);
		if(index>=100) index=100;
		
		return true;
	}
}::::::::::::::
Paint.java
::::::::::::::
import java.awt.*;
import java.applet.*;

public class Paint extends Applet {
	Label Status;
	DrawCanvas c;
	
    public void init() {
	setLayout(new BorderLayout());

	setBackground(Color.gray);
	setForeground(Color.black);

	Panel w=new Panel();
	w.setLayout(new GridLayout(7,0));
	w.add(new Button("Rect"));
	w.add(new Button("Round"));
	w.add(new Button("Circ"));
	w.add(new Button("Line"));
	w.add(new Button("Draw"));
	w.add(new Button("Redraw"));
	w.add(new Button("Clear"));
	add("West", w);

	Status=new Label("Status Line");
	Panel p=new Panel();
	p.setBackground(Color.gray);
	p.add(Status);
	add("South",p);

	c=new DrawCanvas();
	c.setBackground(Color.blue);
	add("Center", c);
    }

     public void paint(Graphics g) {
		c.paint(g);
     }

    public boolean action(Event evt, Object arg) {
	String s=(String) arg;
	if (evt.target instanceof Button) {
		Status.setText(((Button)evt.target).getLabel());
		if (s.equals("Draw")) {
			((Button)evt.target).setLabel("Fill");
			c.fill=false;
		} else if (s.equals("Fill")) {
			((Button)evt.target).setLabel("Draw");
			c.fill=true;
		} else c.setDrawMode(s);
	}
	return true;
    }
}
::::::::::::::
mCircle.java
::::::::::::::
import java.awt.*;
import java.applet.*;

public class mCircle extends mRectangle {

	public mCircle(int _x, int _y, int _x2, int _y2) {
		super(_x, _y, _x2, _y2);
	};

	public void draw(Graphics g) {
		if (fill) {
			g.setColor(Color.black);
			g.fillOval(x, y, x2-x, y2-y);			
			g.setColor(Color.yellow);
		}
		g.drawOval(x, y, x2-x, y2-y);
	}
}::::::::::::::
mLine.java
::::::::::::::
import java.awt.*;
import java.applet.*;

public class mLine extends mPoint {

	public mLine(int _x, int _y, int _x2, int _y2) {
		super(_x, _y, _x2, _y2);
	};

	public void draw(Graphics g) {
		g.drawLine(x, y, x2, y2);
	}
}::::::::::::::
mPoint.java
::::::::::::::
import java.awt.*;
import java.applet.*;

public class mPoint extends Object {

	
	int x,y,x2,y2;
	boolean fill=false;

	public mPoint(int _x, int _y, int _x2, int _y2) {

		x=_x;
		y=_y;
		x2=_x2;
		y2=_y2;
	};

	public void draw(Graphics g) {
	}

	public void setFill(boolean _fill) {
		fill=_fill;
	}

	public boolean isIn(int _x, int _y) {
		return true;
	}

	public void setEnds(int _x, int _y) {
		x2=_x;
		y2=_y;
	}
}::::::::::::::
mRectangle.java
::::::::::::::
import java.awt.*;
import java.applet.*;

public class mRectangle extends mPoint {

	public mRectangle(int _x, int _y, int _x2, int _y2) {
		super(_x, _y, _x2, _y2);
	};

	public void draw(Graphics g) {
		if (fill) {
			g.setColor(Color.black);
			g.fillRect(x, y, x2-x, y2-y);
			g.setColor(Color.yellow);
		}
		g.drawRect(x, y, x2-x, y2-y);
	}

	public boolean isIn(int _x, int _y) {
		Rectangle r=new Rectangle(x, y, x2-x, y2-y);
		return r.inside(_x, _y);
	}
}::::::::::::::
mRound.java
::::::::::::::
import java.awt.*;
import java.applet.*;

public class mRound extends mPoint {

	public mRound(int _x, int _y, int _x2, int _y2) {
		super(_x, _y, _x2, _y2);
	};

	public void draw(Graphics g) {
		if (fill) {
			g.setColor(Color.black);
			g.fillRoundRect(x, y, x2-x, y2-y, 100, 50);
			g.setColor(Color.yellow);
		}
		g.drawRoundRect(x, y, x2-x, y2-y, 100, 50);
	}
}