Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Main extends JFrame implements KeyListener, ActionListener {
    JTextField typingArea;

    public static void main(String[] args) {
        Main frame = new Main();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.addComponentsToPane();
        frame.pack();
        frame.setVisible(true);
    }

    private void addComponentsToPane() {

        JButton button = new JButton("Clear");
        button.addActionListener(this);

        typingArea = new JTextField(20);
        typingArea.addKeyListener(this);

        getContentPane().add(typingArea, BorderLayout.PAGE_START);
        getContentPane().add(button, BorderLayout.PAGE_END);
    }

    public void keyTyped(KeyEvent e) {
        displayInfo(e, "KEY TYPED: ");
    }

    public void keyPressed(KeyEvent e) {
        displayInfo(e, "KEY PRESSED: ");
    }

    public void keyReleased(KeyEvent e) {
        displayInfo(e, "KEY RELEASED: ");
    }

    public void actionPerformed(ActionEvent e) {
        typingArea.setText("");
        typingArea.requestFocusInWindow();
    }

    private void displayInfo(KeyEvent e, String keyStatus) {
        int id = e.getID();
        String keyString;

        int modifiersEx = e.getModifiersEx();
        String modString = "extended modifiers = " + modifiersEx;
        String tmpString = KeyEvent.getModifiersExText(modifiersEx);
        if (tmpString.length() > 0) {
            modString += " (" + tmpString + ")";
        } else {
            modString += " (no extended modifiers)";
        }
        String actionString = "action key? ";
        if (e.isActionKey()) {
            actionString += "YES";
        } else {
            actionString += "NO";
        }
        System.out.println(keyStatus + "\n" + modString + "\n" + actionString + "\n");
    }
}