关于java登陆界面
[code=Java][/code]
import java.awt.*;
import java.awt.event.*;
import javax.swing.JOptionPane;
class Welcome extends Frame implements ActionListener{
Welcome(String s){
setBounds(100,100,200,150);
setVisible(true);
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
}
class MyWindow extends Frame implements ActionListener{
Label L1,L2;
TextField t1,t2;
Button b1,b2;
MenuBar menubar;
Menu menu;
MyWindow(String s)
{
//窗口设置
super(s);
setTitle(s);
setLayout(new FlowLayout());
setBounds(100,100,200,150);
setVisible(true);
setResizable(true);
//添加组件
menubar=new MenuBar();
menu=new Menu("黄海波1040610109");
menubar.add(menu);
setMenuBar(menubar);
L1=new Label("输入用户名");
L2=new Label("输入密码");
t1=new TextField(10);
t2=new TextField(10);
t2.setEchoChar('*');
Button b1=new Button("OK");
Button b2=new Button("Exit");
add(L1);
add(t1);
add(L2);
add(t2);
add(b1);
add(b2);
b1.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) {
String user=t1.getText();
String password=t2.getText();
if(user.equals("huanghaibo")&&password.equals("123456"))
{
Welcome welcome=new Welcome("Welcome "+user);
MyWindow.setVisible(false);/*这里想在Welcome弹出后将MyWindow隐藏，可是报错。*/
}else{
JOptionPane.showMessageDialog(null,"用户名或密码错误");
}
}
}
);
b2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.exit(1);
}
}
);
validate();
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
}
public class j411040610109 {
public static void main(String[] args) {
MyWindow win=new MyWindow("登陆");
}
}
有一处报错，请高手帮忙解决。。。在线等
[解决办法]
import java.awt.*;import java.awt.event.*;import javax.swing.JOptionPane;class Welcome extends Frame implements ActionListener { Welcome(String s) { setBounds(100, 100, 200, 150); setVisible(true); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); } public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub }}class MyWindow extends Frame implements ActionListener { Label L1, L2; TextField t1, t2; Button b1, b2; MenuBar menubar; Menu menu; MyWindow(String s) { // 窗口设置 super(s); setTitle(s); setLayout(new FlowLayout()); setBounds(100, 100, 200, 150); setVisible(true); setResizable(true); // 添加组件 menubar = new MenuBar(); menu = new Menu("黄海波1040610109"); menubar.add(menu); setMenuBar(menubar); L1 = new Label("输入用户名"); L2 = new Label("输入密码"); t1 = new TextField(10); t2 = new TextField(10); t2.setEchoChar('*'); Button b1 = new Button("OK"); Button b2 = new Button("Exit"); add(L1); add(t1); add(L2); add(t2); add(b1); add(b2); b1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String user = t1.getText(); String password = t2.getText(); if (user.equals("huanghaibo") && password.equals("123456")) { Welcome welcome = new Welcome("Welcome " + user); closeLoginFrame(); //this.setVisible(false);/*这里想在Welcome弹出后将MyWindow隐藏，可是报错。*/ } else { JOptionPane.showMessageDialog(null, "用户名或密码错误"); } } }); b2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { System.exit(1); } }); validate(); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); } public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub } private void closeLoginFrame() { this.setVisible(false); //建议你用下面这个方法比较好 //this.dispose(); }}public class j411040610109 { public static void main(String[] args) { MyWindow win = new MyWindow("登陆"); }}
[解决办法]
在你的MyWindow类里面增加个MyWindow my = this;
下面就可以用my.setVisible(false);了
我试过了可以的