Here is the java code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.applet.*;
public class IncomeTaxCalculator extends Applet
implements ActionListener,WindowListener{
private Label label,label1,label2,label3;
private JTextField txt,txt1,txt3,txt4;
private JButton btn1,btn2;
public void init(){
Frame f=new Frame();
Frame f1=new Frame();
f.setLayout(new BorderLayout());
f.setSize(1000, 300);
Panel p=new Panel();
Panel pc1=new Panel();
//pc.setLayout(new BorderLayout());
f.add(pc1,"South");
f.add(p,"North");
label=new Label("Enter Income :");
label1=new Label("Tax To Be Paid :");
label2=new Label("Cess");
label3=new Label("Income Tax");
txt1=new JTextField(10);
txt3=new JTextField(10);
txt4=new JTextField(10);
txt=new JTextField(10);
p.add(label);
p.add(txt);
p.add(label3);
p.add(txt4);
p.add(label2);
p.add(txt3);
p.add(label1);
p.add(txt1);
btn1= new JButton("SUBMIT");
btn2= new JButton("EXIT");
pc1.add(btn1);
pc1.add(btn2);
f.setVisible(true);
btn1.addActionListener(this);
btn2.addActionListener(this);
}
public static void main(String args[]){
new IncomeTaxCalculator().init();
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
JButton btn=(JButton)e.getSource();
if(btn==btn1){
double a=Integer.parseInt(txt.getText());
double tax=0,b=0;
if(a>0 && a<=160000){ //Change the Income here
txt1.setText("0");
txt4.setText("0");
txt3.setText("0");
}else if(a>160000 && a<=300000){ //Change the Income here
a=a-160000;
tax=0.1*a; //Change the rate % here
txt4.setText(String.valueOf(tax));
txt3.setText(String.valueOf(tax*.03));
tax+=tax*.03;
txt1.setText(String.valueOf(tax));
}else if(a>300000 && a<=500000){ //Change the Income here
a=a-300000;
tax=0.2*a+14000; //Change the rate % here
txt4.setText(String.valueOf(tax));
txt3.setText(String.valueOf(tax*.03));
tax+=tax*.03;
txt1.setText(String.valueOf(tax));
}else if(a>500000){ //Change the Income here
a=a-500000;
tax=0.3*a+54000; //Change the rate % here
txt4.setText(String.valueOf(tax));
txt3.setText(String.valueOf(tax*.03));
tax+=tax*.03;
txt1.setText(String.valueOf(tax));
}
}else if(btn==btn2){
System.exit(0);
}
}
@Override
public void windowActivated(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowClosed(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowClosing(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowDeactivated(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowDeiconified(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowIconified(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
public void windowOpened(WindowEvent e) {
// TODO Auto-generated method stub
}
}