Functions in java to create color palette

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

/*<applet code=”exp” width=400 height=400>

</applet>*/

public class exp extends Applet implements ItemListener

{

int currcolor=5;

int flag=1;

String text=”Click any of the buttons”;

Button buttons[]=new Button[5];

String colours[]={“Red”,”Blue”,”Green”,”Yellow”,”Magenta”};

Image img;

CheckboxGroup cbg=new CheckboxGroup();

Checkbox box1=new Checkbox(“Background Color”,cbg,true);

Checkbox box2=new Checkbox(“Text Color”,cbg,false);

Checkbox box3=new Checkbox(“Loading Image”,cbg,false);

public void init()

{

for(int i=0;i<5;i++)

{

buttons[i]=new Button(” “);

add(buttons[i]);

}

buttons[0].setBackground(Color.red);

buttons[1].setBackground(Color.blue);

buttons[2].setBackground(Color.green);

buttons[3].setBackground(Color.yellow);

buttons[4].setBackground(Color.magenta);

add(box1);

add(box2);

add(box3);

box1.addItemListener(this);

box2.addItemListener(this);

box3.addItemListener(this);

}

public void itemStateChanged(ItemEvent ev)

{

if(box1.getState()==true)

flag=1;

else if(box2.getState()==true)

{

text=”Default color is black”;

flag=2;

}

else if(box3.getState()==true)

{

img=getImage(getDocumentBase(),”Water lilies.jpg”);

flag=3;

}

repaint();

}

public void paint(Graphics g)

{

if(flag==2)

{

g.drawString(text,30,100);

switch(currcolor)

{

case 0:

g.setColor(Color.red);

break;

case 1:

g.setColor(Color.blue);

break;

case 2:

g.setColor(Color.green);

break;

case 3:

g.setColor(Color.yellow);

break;

case 4:

g.setColor(Color.magenta);

break;

case 5:

g.setColor(Color.black);

break;

}

g.drawString(text,30,100);

}

else if(flag==1)

{

g.drawString(text,30,100);

switch(currcolor)

{

case 0:

setBackground(Color.red);

break;

case 1:

setBackground(Color.blue);

break;

case 2:

setBackground(Color.green);

break;

case 3:

setBackground(Color.yellow);

 

break;

case 4:

setBackground(Color.magenta);

break;

case 5:

setBackground(Color.white);

break;

}

}

else if(flag==3)

{

g.drawImage(img,20,90,this);

}

}

public boolean action(Event e,Object o)

{

for(int i=0;i<5;i++)

{

if(e.target==buttons[i])

{

currcolor=i;

text=”You have chosen “+colours[i];

repaint();

return true;

}

}

return false;

}

}

 

Raj.html

 

<html>

<body>

<applet code=”Colorp.class” height=100 width=450></applet>

</body>

</html>

 

 

 

 

 

OUTPUT

javac Colorp.java

appletviewer raj.html