我的java学习之界面设置01

 1 import java.awt.*;
 2 import javax.swing.*;
 3 import java.awt.event.*;
 4 public class TestLogin{
 5     public static void main(String [] args){
 6         JFrame frame = new LoginFrame();
 7         frame.setVisible(true);
 8         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 9     }
10 }
11 
12 class LoginFrame extends JFrame{
13     public LoginFrame() {
14         this.setTitle("Login Frame");
15         this.setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
16 
17         
18         setFrame();
19         addListener();
20     }
21 
22     //设置界面布局
23     public void setFrame(){
24         panInput.setLayout(new GridLayout(2,2));
25         panInput.add(labUser);
26         panInput.add(txtUser);
27         panInput.add(labPass);
28         panInput.add(txtPass);
29 
30         panBtn.setLayout(new FlowLayout());
31         panBtn.add(btnLogin);
32         panBtn.add(btnRegist);
33         panBtn.add(btnCancel);
34 
35         this.setLayout(new BorderLayout());
36         this.add(panInput, BorderLayout.CENTER);
37         this.add(panBtn, BorderLayout.SOUTH);
38     }
39     //添加事件监听
40     public void addListener() {
41         btnLogin.addActionListener(new ActionListener()
42             {
43                 public void actionPerformed(ActionEvent e) {
44                     System.out.println("等待验证");
45                     String name = txtUser.getText();
46                     String pass = txtPass.getText();
47                     if(name.equals("asdf") && pass.equals("asdf")) {
48                         System.out.println("验证通过等待登陆");
49                     }
50                 }
51             }
52         );
53     }
54 
55     private JLabel labUser = new JLabel("用户名");
56     private JLabel labPass = new JLabel("密码");
57     private JTextField txtUser = new JTextField();
58     private JPasswordField txtPass = new JPasswordField();
59 
60     private JButton btnLogin = new JButton("登陆");
61     private JButton btnRegist = new JButton("注册");
62     private JButton btnCancel = new JButton("取消");
63 
64     private JPanel panInput = new JPanel();
65     private JPanel panBtn = new JPanel();
66     private static final int DEFAULT_WIDTH = 250;
67     private static final int DEFAULT_HEIGHT = 150;
68 }

 1 // TestMain 聊天界面及事件处理 
 2 import java.awt.*;
 3 import javax.swing.*;
 4 import java.awt.event.*;
 5 import java.io.*;
 6 public class TestMain{
 7     public static void main(String [] args){
 8         JFrame frame = new MainFrame();
 9         frame.setVisible(true);
10         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
11     }
12 }
13 
14 class MainFrame extends JFrame{
15     public MainFrame() {
16         this.setTitle("Main Frame");
17         this.setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
18 
19         setFrame();
20         readChatMessage();
21         addListener();
22     }
23 
24     //设置界面布局
25     public void setFrame(){
26         panInput.setLayout(new GridLayout(1,2));
27         panInput.add(comBox);
28         panInput.add(btnSend);
29 
30         panUser.setLayout(new GridLayout(2,1));
31         panUser.add(txtMess);
32         panUser.add(panInput);
33 
34         this.setLayout(new BorderLayout());
35         this.add(panUser, BorderLayout.NORTH);
36         this.add(scrollPane, BorderLayout.CENTER);
37     }
38     //添加事件监听
39     public void addListener() {
40         txtMess.addKeyListener( new KeyAdapter() 
41             {
42                 public void keyPressed(KeyEvent e) {
43                     if(e.getKeyCode() == e.VK_ENTER) {
44                         txtContent.append(txtMess.getText() + "\n");
45                         saveChatMessage();
46                         txtMess.setText("");
47                     }
48                 }
49             }
50         );
51         
52         btnSend.addActionListener(new ActionListener()
53             {
54                 public void actionPerformed(ActionEvent e) {
55                     txtContent.append(txtMess.getText() + "\n");
56                     saveChatMessage();
57                     txtMess.setText("");
58                 }
59             }
60         );
61     }
62     
63     //读取聊天记录
64     public void readChatMessage() {
65         try{
66             File inFile = new File("F://mydata//chat03.txt");            
67             FileReader fr = new FileReader(inFile);
68             BufferedReader br = new BufferedReader(fr);
69             while(br.ready()) {
70                 txtContent.append(br.readLine() + "\n");
71             }
72         }
73         catch (IOException e){e.printStackTrace();}
74     }
75     //保存聊天记录
76     public void saveChatMessage() {
77         try{
78             File outFile = new File("F://mydata//chat03.txt");            
79             FileWriter fw = new FileWriter(outFile,true); //如果不加true则直接替换
80             PrintWriter pw = new PrintWriter(fw);
81             pw.println(txtMess.getText()+ "\n");
82             pw.flush();//如果不写flush 则无法将缓冲区的数据写入
83         }
84         catch (IOException e){e.printStackTrace();}
85     }
86     private JTextField txtMess = new JTextField();
87     private JComboBox comBox = new JComboBox();
88     private JButton btnSend = new JButton("发送");
89     private JTextArea txtContent = new JTextArea();
90     private JScrollPane scrollPane = new JScrollPane(txtContent);
91 
92     private JPanel panInput = new JPanel();
93     private JPanel panUser = new JPanel();
94 
95     private static final int DEFAULT_WIDTH = 400;
96     private static final int DEFAULT_HEIGHT = 250;
97 }