Income Tax Calculator

With many of people giving Income tax each year this application would be a cool application for them as this will calculate their Income Tax in just few seconds. Its a java application. What you need to do is just change the tax % every year and then import it using ECLIPSE IDE..

Eclipse IDE has this feature of importing project as executable jar files which help them to run just by double clicking on them.

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
        
    }
}