import java.awt.*; import java.awt.event.*; import javax.swing.*; /** * @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; }