TextComponentTest.java Source code

Introduction

Here is the source code for TextComponentTest.java

Source

/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)
    
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
    
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
    
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

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

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingConstants;

/**
 * @version 1.40 2007-04-27
 * @author Cay Horstmann
 */
public class TextComponentTest {
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                TextComponentFrame frame = new TextComponentFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
            }
        });
    }
}

/**
 * A frame with sample text components.
 */
class TextComponentFrame extends JFrame {
    public TextComponentFrame() {
        setTitle("TextComponentTest");
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

        final JTextField textField = new JTextField();
        final JPasswordField passwordField = new JPasswordField();

        JPanel northPanel = new JPanel();
        northPanel.setLayout(new GridLayout(2, 2));
        northPanel.add(new JLabel("User name: ", SwingConstants.RIGHT));
        northPanel.add(textField);
        northPanel.add(new JLabel("Password: ", SwingConstants.RIGHT));
        northPanel.add(passwordField);

        add(northPanel, BorderLayout.NORTH);

        final JTextArea textArea = new JTextArea(8, 40);
        JScrollPane scrollPane = new JScrollPane(textArea);

        add(scrollPane, BorderLayout.CENTER);

        // add button to append text into the text area

        JPanel southPanel = new JPanel();

        JButton insertButton = new JButton("Insert");
        southPanel.add(insertButton);
        insertButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                textArea.append("User name: " + textField.getText() + " Password: "
                        + new String(passwordField.getPassword()) + "\n");
            }
        });

        add(southPanel, BorderLayout.SOUTH);

        // add a text area with scroll bars

    }

    public static final int DEFAULT_WIDTH = 300;
    public static final int DEFAULT_HEIGHT = 300;
}