JavaGUI-JButton从另一个类打开另一个框架
我很难在第二帧显示GUI组件。我已经使用第一帧中的JavaGUI-JButton从另一个类打开另一个框架,java,swing,jframe,jbutton,actionlistener,Java,Swing,Jframe,Jbutton,Actionlistener,我很难在第二帧显示GUI组件。我已经使用第一帧中的JButton打开了该帧 这是屏幕截图 这是第一个框架-ClientModule.java 第二帧-ClientMenu.java 这是我试过的代码 ClientModule.java import java.net.*; import java.util.*; import java.io.*; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEven
JButton
打开了该帧
这是屏幕截图
这是第一个框架-ClientModule.java
第二帧-ClientMenu.java
这是我试过的代码
ClientModule.java
import java.net.*;
import java.util.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class ClientModule extends JFrame implements Runnable{
private JPanel panel;
private JFrame frame;
private JLabel titleLbl, userLbl, passLbl, hostLbl, portLbl, ipLbl;
private JTextField userTxt, hostTxt, portTxt, ipTxt;
private JPasswordField passTxt;
private JButton loginBtn;
public static void main(String[] args)
{
new ClientModule().run();
}
public ClientModule()
{
frame = new JFrame("DMS(Drawing Message System)");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
panel = new JPanel();
panel.setPreferredSize(new Dimension(500,500));
panel.setLayout(new FlowLayout());
titleLbl = new JLabel("LogIn to Drawing Message System(DMS)");
titleLbl.setFont(new Font("Rockwell Condensed",Font.BOLD,28));
userLbl = new JLabel("Username:");
passLbl = new JLabel("Password:");
hostLbl = new JLabel("Hostname:");
portLbl = new JLabel("Port No.:");
ipLbl = new JLabel("IP Address:");
userTxt = new JTextField();
userTxt.setPreferredSize(new Dimension(100,30));
passTxt = new JPasswordField();
passTxt.setEchoChar('*');
passTxt.setPreferredSize(new Dimension(100,30));
portTxt = new JTextField();
portTxt.setPreferredSize(new Dimension(100,30));
ipTxt = new JTextField();
ipTxt.setPreferredSize(new Dimension(100,30));
hostTxt = new JTextField();
hostTxt.setPreferredSize(new Dimension(100,30));
loginBtn = new JButton("Login!");
loginBtn.setPreferredSize(new Dimension(90,30));
loginBtn.addActionListener(new LoginBtnListener());
panel.add(titleLbl);
panel.add(userLbl);
panel.add(userTxt);
panel.add(passLbl);
panel.add(passTxt);
panel.add(hostLbl);
panel.add(hostTxt);
panel.add(portLbl);
panel.add(portTxt);
panel.add(ipLbl);
panel.add(ipTxt);
panel.add(loginBtn);
frame.add(panel);
}
private class LoginBtnListener implements ActionListener
{
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent action)
{
//thinking this frame will close after ClientMenu's frame is open
ClientModule client = new ClientModule();
client.setVisible(false);
ClientMenu menu = new ClientMenu();
menu.setVisible(true);
}
}
public void run()
{
frame.pack();
frame.setVisible(true);
}
}
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
public class ClientMenu extends JFrame{
JFrame frame;
JPanel panel;
JLabel titleLbl;
JButton sendBtn,receiveBtn,logoutBtn;
public ClientMenu()
{
frame = new JFrame("Drawing Message System(DMS)");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
panel = new JPanel();
panel.setLayout(new FlowLayout());
panel.setPreferredSize(new Dimension(500,500));
titleLbl = new JLabel("Main Menu");
titleLbl.setFont(new Font("Rockwell Condensed",Font.BOLD,28));
sendBtn = new JButton("Send a Drawing");
sendBtn.setPreferredSize(new Dimension(100,30));
receiveBtn = new JButton("Receive a Drawing");
receiveBtn.setPreferredSize(new Dimension(100,30));
logoutBtn = new JButton("Logout");
logoutBtn.setPreferredSize(new Dimension(100,30));
logoutBtn.addActionListener(new LogoutBtnListener());
panel.add(titleLbl);
panel.add(sendBtn);
panel.add(receiveBtn);
panel.add(logoutBtn);
frame.add(panel);
}
private class LogoutBtnListener implements ActionListener
{
//@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent action)
{
ClientModule client = new ClientModule();
client.setVisible(true);
ClientMenu menu = new ClientMenu();
menu.setVisible(false);
}
}
public static void main(String[] args)
{
new ClientMenu().run();
}
public void run()
{
frame.pack();
frame.setVisible(true);
}
}
ClientMenu.java
import java.net.*;
import java.util.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class ClientModule extends JFrame implements Runnable{
private JPanel panel;
private JFrame frame;
private JLabel titleLbl, userLbl, passLbl, hostLbl, portLbl, ipLbl;
private JTextField userTxt, hostTxt, portTxt, ipTxt;
private JPasswordField passTxt;
private JButton loginBtn;
public static void main(String[] args)
{
new ClientModule().run();
}
public ClientModule()
{
frame = new JFrame("DMS(Drawing Message System)");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
panel = new JPanel();
panel.setPreferredSize(new Dimension(500,500));
panel.setLayout(new FlowLayout());
titleLbl = new JLabel("LogIn to Drawing Message System(DMS)");
titleLbl.setFont(new Font("Rockwell Condensed",Font.BOLD,28));
userLbl = new JLabel("Username:");
passLbl = new JLabel("Password:");
hostLbl = new JLabel("Hostname:");
portLbl = new JLabel("Port No.:");
ipLbl = new JLabel("IP Address:");
userTxt = new JTextField();
userTxt.setPreferredSize(new Dimension(100,30));
passTxt = new JPasswordField();
passTxt.setEchoChar('*');
passTxt.setPreferredSize(new Dimension(100,30));
portTxt = new JTextField();
portTxt.setPreferredSize(new Dimension(100,30));
ipTxt = new JTextField();
ipTxt.setPreferredSize(new Dimension(100,30));
hostTxt = new JTextField();
hostTxt.setPreferredSize(new Dimension(100,30));
loginBtn = new JButton("Login!");
loginBtn.setPreferredSize(new Dimension(90,30));
loginBtn.addActionListener(new LoginBtnListener());
panel.add(titleLbl);
panel.add(userLbl);
panel.add(userTxt);
panel.add(passLbl);
panel.add(passTxt);
panel.add(hostLbl);
panel.add(hostTxt);
panel.add(portLbl);
panel.add(portTxt);
panel.add(ipLbl);
panel.add(ipTxt);
panel.add(loginBtn);
frame.add(panel);
}
private class LoginBtnListener implements ActionListener
{
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent action)
{
//thinking this frame will close after ClientMenu's frame is open
ClientModule client = new ClientModule();
client.setVisible(false);
ClientMenu menu = new ClientMenu();
menu.setVisible(true);
}
}
public void run()
{
frame.pack();
frame.setVisible(true);
}
}
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
public class ClientMenu extends JFrame{
JFrame frame;
JPanel panel;
JLabel titleLbl;
JButton sendBtn,receiveBtn,logoutBtn;
public ClientMenu()
{
frame = new JFrame("Drawing Message System(DMS)");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
panel = new JPanel();
panel.setLayout(new FlowLayout());
panel.setPreferredSize(new Dimension(500,500));
titleLbl = new JLabel("Main Menu");
titleLbl.setFont(new Font("Rockwell Condensed",Font.BOLD,28));
sendBtn = new JButton("Send a Drawing");
sendBtn.setPreferredSize(new Dimension(100,30));
receiveBtn = new JButton("Receive a Drawing");
receiveBtn.setPreferredSize(new Dimension(100,30));
logoutBtn = new JButton("Logout");
logoutBtn.setPreferredSize(new Dimension(100,30));
logoutBtn.addActionListener(new LogoutBtnListener());
panel.add(titleLbl);
panel.add(sendBtn);
panel.add(receiveBtn);
panel.add(logoutBtn);
frame.add(panel);
}
private class LogoutBtnListener implements ActionListener
{
//@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent action)
{
ClientModule client = new ClientModule();
client.setVisible(true);
ClientMenu menu = new ClientMenu();
menu.setVisible(false);
}
}
public static void main(String[] args)
{
new ClientMenu().run();
}
public void run()
{
frame.pack();
frame.setVisible(true);
}
}
我不确定我是否遗漏了什么,或者编码错了什么,或者其他什么。我已经找过了,试过了。。
非常感谢您的帮助和理解(:我通过添加对
run()
方法的调用,成功地显示了第二帧(包括其内容):
ClientMenu menu = new ClientMenu();
menu.setVisible(true);
menu.run();
尽管如此,您的代码仍存在一些问题:
main
方法。每个应用程序应该只有一个main方法。由于ClientModule
似乎是您要打开的第一个框架,您可能希望将main方法保留在那里,并删除另一个类中的一个run()
方法。就我个人而言,我倾向于避免这样命名方法,因为这样可能会导致与run()混淆处理线程时需要重写的
方法。显然,您正试图在ClientModule
中执行一些多线程操作,但不会起作用。请查看并发教程以更好地理解线程。您还应该明白,决不能调用run()
你自己。教程应该清楚地说明这一点dispose()
。也就是说,方法通常是使用。这将允许您有一个包含多个内容的框架对不起,长的帖子,但是请在继续之前考虑上面的重构。
您可以使用SETVICE属性为“true”或“false”。什么是问题?如果调用<代码> Run(),会发生什么?来自第二帧的构造函数?啊,对不起..如果我单击ClientModule类中的按钮,它将从ClientMenu类打开第二帧。但是Gui组件没有显示在第二帧中..和..我不确定如何创建第一帧(ClientModule)在第二帧打开后自动关闭。请查看并使用卡片布局或对话框。有关详细信息,请参阅和