Paste_Image.png
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class QQMain extends JFrame implements ActionListener {
JTextField txtMess = new JTextField();
JComboBox cmbUser = new JComboBox();
JTextArea txtContent = new JTextArea();
QQMain(){
this.setSize(300, 400);
//new组件
JButton btnSend = new JButton("发送");
JScrollPane spContent = new JScrollPane(txtContent);
//注册事件监听
btnSend.addActionListener(this);
//布置小面板
JPanel panSmall = new JPanel();
panSmall.setLayout(new GridLayout(1, 2));
panSmall.add(cmbUser);
panSmall.add(btnSend);
//布置大面板
JPanel panBig = new JPanel();
panBig.setLayout(new GridLayout(2, 1));
panBig.add(txtMess);
panBig.add(panSmall);
//布置窗体
this.setLayout(new BorderLayout());
this.add(panBig, BorderLayout.NORTH);
this.add(spContent,BorderLayout.CENTER);
}
@Override
public void actionPerformed(ActionEvent arg0){
}
}
Paste_Image.png
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class QQLogin extends JFrame implements ActionListener{
//new 组件
JLabel labUser = new JLabel("用户名");
JLabel labPass = new JLabel("密码");
JTextField txtUser = new JTextField();
JPasswordField txtPass = new JPasswordField();
JButton btnLogin = new JButton("登录");
JButton btnReg = new JButton("注册");
JButton btnCancel = new JButton("取消");
//布置输入面板
JPanel panInput = new JPanel();
//布置按钮面板
JPanel panButton = new JPanel();
public QQLogin() {
this.setSize(250, 125);
//注册事件监听
btnLogin.addActionListener(this);
btnReg.addActionListener(this);
btnCancel.addActionListener(this);
//布置输入面板
panInput.setLayout(new GridLayout(2, 2));
panInput.add(labUser);
panInput.add(txtUser);
panInput.add(labPass);
panInput.add(txtPass);
//布置按钮面板
panButton.setLayout(new FlowLayout());
panButton.add(btnLogin);
panButton.add(btnReg);
panButton.add(btnCancel);
//布置窗体
this.setLayout(new BorderLayout());
this.add(panInput, BorderLayout.CENTER);
this.add(panButton, BorderLayout.SOUTH);
}
public static void main(String args[]){
Object w = new QQLogin();
((QQLogin)w).setVisible(true);
}
@Override
public void actionPerformed(ActionEvent arg0){
if(arg0.getActionCommand().equals("登录")){
// System.out.println("用户点击了登录");
String user = txtUser.getText();
String pass = txtPass.getText();
if (user.equals("aaa")&& pass.equals("111")) {
QQMain w = new QQMain();
w.setVisible(true);
this.setVisible(false);
}
}
if(arg0.getActionCommand().equals("注册")){
System.out.println("用户点击了注册");
}
if(arg0.getActionCommand().equals("取消")){
System.out.println("用户点击了取消");
}
}
}
Paste_Image.png
Paste_Image.png
Paste_Image.png
Paste_Image.png
Paste_Image.png
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
public class QQLogin extends JFrame implements ActionListener{
//new 组件
JLabel labUser = new JLabel("用户名");
JLabel labPass = new JLabel("密码");
JTextField txtUser = new JTextField();
JPasswordField txtPass = new JPasswordField();
JButton btnLogin = new JButton("登录");
JButton btnReg = new JButton("注册");
JButton btnCancel = new JButton("取消");
//布置输入面板
JPanel panInput = new JPanel();
//布置按钮面板
JPanel panButton = new JPanel();
public QQLogin() {
this.setSize(250, 125);
//注册事件监听
btnLogin.addActionListener(this);
btnReg.addActionListener(this);
btnCancel.addActionListener(this);
//布置输入面板
panInput.setLayout(new GridLayout(2, 2));
panInput.add(labUser);
panInput.add(txtUser);
panInput.add(labPass);
panInput.add(txtPass);
//布置按钮面板
panButton.setLayout(new FlowLayout());
panButton.add(btnLogin);
panButton.add(btnReg);
panButton.add(btnCancel);
//布置窗体
this.setLayout(new BorderLayout());
this.add(panInput, BorderLayout.CENTER);
this.add(panButton, BorderLayout.SOUTH);
}
public static void main(String args[]){
Object w = new QQLogin();
((QQLogin)w).setVisible(true);
}
@Override
public void actionPerformed(ActionEvent arg0){
if(arg0.getActionCommand().equals("登录")){
// System.out.println("用户点击了登录");
String user = txtUser.getText();
String pass = txtPass.getText();
if (user.equals("aaa")&& pass.equals("111")) {
QQMain w = new QQMain();
w.setVisible(true);
this.setVisible(false);
}
}
if(arg0.getActionCommand().equals("注册")){
System.out.println("用户点击了注册");
}
if(arg0.getActionCommand().equals("取消")){
System.out.println("用户点击了取消");
}
}
}
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class QQMain extends JFrame implements ActionListener {
JTextField txtMess = new JTextField();
JComboBox cmbUser = new JComboBox();
JTextArea txtContent = new JTextArea();
QQMain(){
this.setSize(300, 400);
//new组件
JButton btnSend = new JButton("发送");
JScrollPane spContent = new JScrollPane(txtContent);
//注册事件监听
btnSend.addActionListener(this);
//布置小面板
JPanel panSmall = new JPanel();
panSmall.setLayout(new GridLayout(1, 2));
panSmall.add(cmbUser);
panSmall.add(btnSend);
//布置大面板
JPanel panBig = new JPanel();
panBig.setLayout(new GridLayout(2, 1));
panBig.add(txtMess);
panBig.add(panSmall);
//布置窗体
this.setLayout(new BorderLayout());
this.add(panBig, BorderLayout.NORTH);
this.add(spContent,BorderLayout.CENTER);
//读聊天记录
try {
File f = new File("D:/work/聊天记录.qq");
FileReader fr = new FileReader(f);
BufferedReader br = new BufferedReader(fr);
while (br.ready()) {
txtContent.append(br.readLine()+"\n");
}
} catch (Exception e) {
// TODO: handle exception
}
}
@Override
public void actionPerformed(ActionEvent arg0){
//txtMess ====>txtContent
txtContent.append(txtMess.getText()+"\n");
//将txtMess的内容存入聊天记录文件
try {
File f = new File("D:/work/聊天记录.qq");
FileWriter fw = new FileWriter(f);
PrintWriter pw = new PrintWriter(fw);
pw.println(txtMess.getText());
pw.close();
} catch (Exception e) {
// TODO: handle exception
}
//清除txtMess中的内容
txtMess.setText("");
}
}
Paste_Image.png
Paste_Image.png
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class QQMain extends JFrame implements ActionListener {
JTextField txtMess = new JTextField();
JComboBox cmbUser = new JComboBox();
JTextArea txtContent = new JTextArea();
QQMain(){
this.setSize(300, 400);
//new组件
JButton btnSend = new JButton("发送");
JScrollPane spContent = new JScrollPane(txtContent);
//注册事件监听
btnSend.addActionListener(this);
//布置小面板
JPanel panSmall = new JPanel();
panSmall.setLayout(new GridLayout(1, 2));
panSmall.add(cmbUser);
panSmall.add(btnSend);
//布置大面板
JPanel panBig = new JPanel();
panBig.setLayout(new GridLayout(2, 1));
panBig.add(txtMess);
panBig.add(panSmall);
//布置窗体
this.setLayout(new BorderLayout());
this.add(panBig, BorderLayout.NORTH);
this.add(spContent,BorderLayout.CENTER);
//读聊天记录
try {
File f = new File("D:/work/聊天记录.qq");
FileReader fr = new FileReader(f);
BufferedReader br = new BufferedReader(fr);
while (br.ready()) {
txtContent.append(br.readLine()+"\n");
}
} catch (Exception e) {
// TODO: handle exception
}
}
@Override
public void actionPerformed(ActionEvent arg0){
//txtMess ====>txtContent
txtContent.append(txtMess.getText()+"\n");
//将txtMess的内容存入聊天记录文件
try {
File f = new File("D:/work/聊天记录.qq");
FileWriter fw = new FileWriter(f,true);
PrintWriter pw = new PrintWriter(fw);
pw.println(txtMess.getText());
pw.close();
} catch (Exception e) {
// TODO: handle exception
}
//清除txtMess中的内容
txtMess.setText("");
}
}
Paste_Image.png