JavaSwing

import javax.swing.*;
import java.awt.event.*;
class SwingExample 
{
    public static void main(String[] args) 
    {
        JFrame f=new JFrame();
        final JTextField text1=new JTextField(20);
        JTextField text2=new JTextField(20);
        JTextField text3=new JTextField(20);
        JTextField text4=new JTextField(20);

        f.setLayout(null);
        JButton b1=new JButton("Increment");
        JButton b2=new JButton("Decrement");
        JButton b3=new JButton("Reset");

        text1.setBounds(10,10,150,20);
        text2.setBounds(10,40,150,20);
        text3.setBounds(10,70,150,20);
        text4.setBounds(10,100,150,20);

        b1.setBounds(10,130,100,20);
        b2.setBounds(120,130,100,20);
        b3.setBounds(240,130,100,20);

        f.add(text1);
        f.add(text2);
        f.add(text3);
        f.add(text4);
        f.add(b1);
        f.add(b2);
        f.add(b3);

        b1.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
            int num=Integer.parseInt(text1.getText());
            num=num+1;
            text1.setText(Integer.toString(num));
            }
        });
        b2.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
            int num=Integer.parseInt(text1.getText());
            num=num-1;
            text1.setText(Integer.toString(num));
            }
        });
        b3.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
            text1.setText(" ");
            }
        });
        f.setVisible(true);
        f.setSize(350,200);
            }
        }