Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;

public class Main {
    public static void main(String[] args) {
        JPanel panel = new JPanel(new BorderLayout());
        String[] values = new String[] { "One", "Two", "Three" };
        JComboBox<String> comboBox = new JComboBox<>(values);
        panel.add(comboBox, BorderLayout.NORTH);
        JTextArea textArea = new JTextArea(2, 2);
        panel.add(textArea, BorderLayout.CENTER);
        JButton button = new JButton("Action");
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                textArea.setText((String) comboBox.getSelectedItem());
                comboBox.setSelectedIndex(0);
            }
        });
        panel.add(button, BorderLayout.SOUTH);
        JFrame frame = new JFrame();
        frame.add(panel);
        frame.pack();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}