// Fig. 12.7: TextFieldTest.java // Demonstrating the JTextField class. import java.awt.*; import java.awt.event.*; import javax.swing.*; public class TextFieldTest extends JFrame { private JTextField text1, text2, text3; private JPasswordField password; public TextFieldTest() { super( "Testing JTextField and JPasswordField" ); Container c = getContentPane(); c.setLayout( new FlowLayout() ); // construct textfield with default sizing text1 = new JTextField( 10 ); c.add( text1 ); // construct textfield with default text text2 = new JTextField( "Enter text here" ); c.add( text2 ); // construct textfield with default text and // 20 visible elements and no event handler text3 = new JTextField( "Uneditable text field", 20 ); text3.setEditable( false ); c.add( text3 ); // construct textfield with default text password = new JPasswordField( "Hidden text" ); c.add( password ); TextFieldHandler handler = new TextFieldHandler(); text1.addActionListener( handler ); text2.addActionListener( handler ); text3.addActionListener( handler ); password.addActionListener( handler ); setSize( 325, 100 ); show(); } public static void main( String args[] ) { TextFieldTest app = new TextFieldTest(); app.addWindowListener( new WindowAdapter() { public void windowClosing( WindowEvent e ) { System.exit( 0 ); } } ); } // inner class for event handling private class TextFieldHandler implements ActionListener { public void actionPerformed( ActionEvent e ) { String s = ""; if ( e.getSource() == text1 ) s = "text1: " + e.getActionCommand(); else if ( e.getSource() == text2 ) s = "text2: " + e.getActionCommand(); else if ( e.getSource() == text3 ) s = "text3: " + e.getActionCommand(); else if ( e.getSource() == password ) { JPasswordField pwd = (JPasswordField) e.getSource(); s = "password: " + new String( pwd.getPassword() ); } JOptionPane.showMessageDialog( null, s ); } } } /************************************************************************** * (C) Copyright 1999 by Deitel & Associates, Inc. and Prentice Hall. * * All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * *************************************************************************/