关于JTextField 和 JPasswordfield的问题

Question

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;public class TextFieldTest extends JFrame 
{
private JTextField textField1,textField2,textField3;
private JPasswordField passwordField; public TextFieldTest()
{
super("我的swing"); Container container = new Container();
container.setLayout(new FlowLayout()); textField1 = new JTextField(10);
container.add(textField1); textField2 = new JTextField("Enter text here");
container.add(textField2); textField3 = new JTextField("Uneditable text field",20);
textField3.setEditable(false);
container.add(textField3); passwordField = new JPasswordField("Hidden text");
container.add(passwordField); TextFieldHandler handler = new TextFieldHandler();
textField1.addActionListener(handler);
textField2.addActionListener(handler);
textField3.addActionListener(handler); passwordField.addActionListener(handler); setSize(325,100);
setVisible(true);
}
public static void main(String[] args) 
{ TextFieldTest application = new TextFieldTest(); application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

} class TextFieldHandler implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
String string = ""; if (event.getSource()==textField1)

string = "texField:"+event.getActionCommand(); else if (event.getSource()==textField2)

string = "texField:"+event.getActionCommand();

else if (event.getSource()==textField3)

string = "texField:"+event.getActionCommand(); else if (event.getSource()==passwordField);

string = "passwordField:"+new String (passwordField.getPassword());

JOptionPane.showMessageDialog(null,string);
}
}
}
我运行后怎么没有运行出相关的文本字段
只有标题
我试着分析了一下
可还是没有找出来那里出了问题　　请高手指教　感激不尽．．．．

Answer 1

1、this.setContentPane(container);
加在
setSize(325, 100);
setVisible(true);
之前
2、
else if (event.getSource()==passwordField);
string = "passwordField:"+new String (passwordField.getPassword());
改成
else if (event.getSource()==passwordField)
string = "passwordField:"+new String (passwordField.getPassword());

Answer 2

package com.geostar.client.geosurfEditor;/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;public class TextFieldTest extends JFrame {
    private JTextField textField1, textField2, textField3;
    private JPasswordField passwordField;
    public TextFieldTest() {
        super("我的swing");
        Container container = new Container();
        container.setLayout(new FlowLayout());        textField1 = new JTextField(10);
        container.add(textField1);        textField2 = new JTextField("Enter text here");
        container.add(textField2);        textField3 = new JTextField("Uneditable text field", 20);
        textField3.setEditable(false);
        container.add(textField3);        passwordField = new JPasswordField("Hidden text");
        container.add(passwordField);        TextFieldHandler handler = new TextFieldHandler();        textField1.addActionListener(handler);
        textField2.addActionListener(handler);
        textField3.addActionListener(handler);
        passwordField.addActionListener(handler);
        this.setContentPane(container);
        setSize(325, 100);
        setVisible(true);
    }    public static void main(String[] args) {        TextFieldTest application = new TextFieldTest();        application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    }    class TextFieldHandler implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            String string = "";            if (event.getSource() == textField1) {                string = "texField:" + event.getActionCommand();
            }            else if (event.getSource() == textField2) {                string = "texField:" + event.getActionCommand();
            }            else if (event.getSource() == textField3) {                string = "texField:" + event.getActionCommand();
            }//            else if (event.getSource() == passwordField) {
//                ;
//            }//            string = "passwordField:" + new String(passwordField.getPassword());
            else if (event.getSource()==passwordField)
            string = "passwordField:"+new String (passwordField.getPassword());            JOptionPane.showMessageDialog(null, string);
        }
    }
}