import java.awt.*;
import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Font;
import java.awt.Color;
public class t1 extends Applet{
private CheckboxGroup help;
private Checkbox radioHint, radioSolution, radioAnswer;
Image image1=null;
Image image2=null;
Image image3=null;
Image image4=null;
Image image5=null;
Image image6=null;
Image image7=null;
FrameOne FrOne;
FrameTwo FrTwo;
FrameThree FrThree;
String s;
public void init()
{
super.init();
repaint();
setBackground(Color.orange);
repaint();
image1 = getImage(getDocumentBase(),"ex1.JPG");
image2 = getImage(getDocumentBase(),"ex1a.JPG");
image3 = getImage(getDocumentBase(),"ex1b.JPG");
image4 = getImage(getDocumentBase(),"ex1c.JPG");
image5 = getImage(getDocumentBase(),"ex1d.JPG");
image6 = getImage(getDocumentBase(),"ex1e.JPG");
image7 = getImage(getDocumentBase(),"ex1f.JPG");
help = new CheckboxGroup();
radioHint = new Checkbox( "Hint", help, false );
radioSolution = new Checkbox( "Solution", help, false );
radioAnswer = new Checkbox( "Answer", help, false );
add( radioHint );
add( radioSolution );
add( radioAnswer );
}
public boolean action(Event e, Object o)
{
if ( e.target instanceof Checkbox )
{
if ( radioHint.getState() == true )
{
s = "Hint";
FrOne = new FrameOne(s);
FrOne.resize(270,160);
FrOne.show();
}
else if ( radioAnswer.getState() == true )
{
s = "Answer: 3.3 Exercise 1";
FrTwo = new FrameTwo(s);
FrTwo.resize(250,75);
FrTwo.show();
}
else if ( radioSolution.getState() == true )
{ s="Solution: 3.3 Exercise 1";
FrThree = new FrameThree(s,image1,image2,image3,image4,image5,image6,image7);
FrThree.resize(500,300);
FrThree.show();
}
}
return true;
}
}
class FrameOne extends Frame{
private int red,green,blue;
private Font font1;
FrameOne(String s)
{
super(s);
setBackground(Color.white);
red=0;
green=0;
blue=0;
font1=new Font("Arial",Font.PLAIN,12);
setLayout(new FlowLayout(FlowLayout.CENTER));
show();
}
public void paint(Graphics g)
{
g.setColor(new Color(red,green,blue));
g.setFont(font1);
g.drawString("First doing the proper operations",10,20);
g.drawString("remove the square brackets",10,40);
g.drawString("Then again doing the proper operations",10,60);
g.drawString("remove the brackets",10,80);
g.drawString("The rest is like in the solved examples",10,100);
}
public boolean handleEvent( Event e )
{
if ( e.id == Event.WINDOW_DESTROY)
{
hide();
dispose();
return true;
}
return super.handleEvent(e);
}
}
class FrameTwo extends Frame{
private int red,green,blue;
private Font font1;
FrameTwo(String s)
{
super(s);
setBackground(Color.white);
red=0;
green=0;
blue=0;
setLayout(new FlowLayout(FlowLayout.CENTER));
reshape(10,225,693,365);
show();
}
public void paint(Graphics g)
{ g.setColor(new Color(red,green,blue));
g.setFont(font1);
g.drawString("x=11/2",100,20);
}
public boolean handleEvent( Event e )
{
if ( e.id == Event.WINDOW_DESTROY)
{
hide();
dispose();
return true;
}
return super.handleEvent(e);
}
}
class FrameThree extends Frame{
private int red,green,blue;
private Font font1;
FrameThree(String s,Image image1,Image image2,Image image3,Image image4,Image image5,Image image6,Image image7)
{
super(s);
setBackground(Color.white);
red=0;
green=0;
blue=0;
_img1=image1;
_img2=image2;
_img3=image3;
_img4=image4;
_img5=image5;
_img6=image6;
_img7=image7;
setLayout(new FlowLayout(FlowLayout.CENTER));
reshape(10,225,693,365);
show();
}
public void paint(Graphics g)
{
g.drawImage(_img1,0,0,this);
g.drawImage(_img2,0,40,this);
g.drawImage(_img3,0,80,this);
g.drawImage(_img4,0,120,this);
g.drawImage(_img5,0,160,this);
g.drawImage(_img6,0,190,this);
g.drawImage(_img7,0,210,this);
}
Image _img1;
Image _img2;
Image _img3;
Image _img4;
Image _img5;
Image _img6;
Image _img7;
public boolean handleEvent( Event e )
{
if ( e.id == Event.WINDOW_DESTROY)
{
hide();
dispose();
return true;
}
return super.handleEvent(e);
}
}