Color Pallatte in JAVA

import java.io.*;
import java.awt.*;
import java.awt.Color.*;
import java.awt.event.*;
import java.applet.*;


/**/


public class train2 extends Applet implements ActionListener,ItemListener
{

Label name,amount,seats,number;
TextField na,am,sts,nr;
TextArea t;
Choice css;
Checkbox si,sr;
CheckboxGroup g;
Button b,cancel;
int s,c,d;
int n1=400;
int n2=250;
int n3=100;

public void init()
{
setBackground(Color.yellow);
setForeground(Color.red);
setLayout(new FlowLayout());
na=new TextField(20);
am=new TextField(20);
sts=new TextField(20);
nr=new TextField(20);
name=new Label("NAME");
amount=new Label("AMOUNT");
seats=new Label("SEATS");
number=new Label("REQUIRED NO OF SEATS");
css=new Choice();
css.add("A.C SLEEPER");
css.add("FIRST CLASS");
css.add("SECOND CLASS");
t=new TextArea(40,45);
g=new CheckboxGroup();
si=new Checkbox("SATAPTI",g,false);
sr=new Checkbox("SABARI",g,false);
b=new Button("SUBMIT");
cancel=new Button("CANCEL");

add(name);
add(na);
add(seats);
add(sts);
add(number);
add(nr);
add(si);
add(sr);
add(css);
add(b);
add(amount);
add(am);
add(t);
add(cancel);
css.addItemListener(this);
b.addActionListener(this);
si.addItemListener (this);
sr.addItemListener (this);


}

public void actionPerformed(ActionEvent ae)
{
if(b.getActionCommand().equals("SUBMIT"))
{ d=Integer.parseInt(nr.getText());
s=(Integer.parseInt(sts.getText()))-d;
if(css.getSelectedItem().equals("A.C SLEEPER"))
{
am.setText("400");
}

else if(css.getSelectedItem().equals("FIRST CLASS"))
{
am.setText("250");
}
else
{

am.setText("100");
}
}

c=((Integer.parseInt(am.getText()))*(Integer.parseInt(nr.getText())));
t.setText("NAME:"+na.getText()+""+"After reservation total no.ofseats are:" +s+""+"Train name:"+g.getSelectedCheckbox().getLabel()+""+"Class:"+ css.getSelectedItem()+ "Total number of Rs :"+c);


if(cancel.getActionCommand().equals("CANCEL"))
{
repaint();
}
}


public void itemStateChanged(ItemEvent ie)
{
}
}


import java.io.*;
import java.awt.*;
import java.awt.Color.*;
import java.awt.event.*;
import java.applet.*;


/**/


public class train2 extends Applet implements ActionListener,ItemListener

{
Label name,amount,seats,number;
TextField na,am,sts,nr;
TextArea t;
Choice css;
Checkbox si,sr;
CheckboxGroup g;
Button b,cancel;
int s,c,d;
int n1=400;
int n2=250;
int n3=100;

public void init()

{
setBackground(Color.yellow);
setForeground(Color.red);
setLayout(new FlowLayout());


na=new TextField(20);
am=new TextField(20);
sts=new TextField(20);
nr=new TextField(20);

name=new Label("NAME");
amount=new Label("AMOUNT");
seats=new Label("SEATS");
number=new Label("REQUIRED NO OF SEATS");

css=new Choice();
css.add("A.C SLEEPER");
css.add("FIRST CLASS");
css.add("SECOND CLASS");

t=new TextArea(40,45);
g=new CheckboxGroup();
si=new Checkbox("SATAPTI",g,false);
sr=new Checkbox("SABARI",g,false);
b=new Button("SUBMIT");
cancel=new Button("CANCEL");
add(name);
add(na);
add(seats);
add(sts);
add(number);
add(nr);
add(si);
add(sr);
add(css);
add(b);
add(amount);
add(am);
add(t);
add(cancel);


css.addItemListener(this);
b.addActionListener(this);
si.addItemListener (this);
sr.addItemListener (this);

}

public void actionPerformed(ActionEvent ae)
{
if(b.getActionCommand().equals("SUBMIT"))
{
d=Integer.parseInt(nr.getText());
s=(Integer.parseInt(sts.getText()))-d;

if(css.getSelectedItem().equals("A.C SLEEPER"))
{
am.setText("400");
}
else if(css.getSelectedItem().equals("FIRST CLASS"))
{
am.setText("250");
}
else
{
am.setText("100");
}
}


c=((Integer.parseInt(am.getText()))*(Integer.parseInt(nr.getText())));
t.setText("NAME:"+na.getText()+""+"After reservation total no.ofseats are:" +s+""+"Train name:"+g.getSelectedCheckbox().getLabel()+""+"Class:"+ css.getSelectedItem()+ "Total number of Rs :"+c);


if(cancel.getActionCommand().equals("CANCEL"))
{
repaint();
}
}
public void itemStateChanged(ItemEvent ie)
{
}
}