登录系统问题求解,不知道哪错了
import java.awt.*;
import java.awt.event.*;
class WindowButton extends Frame
implements ActionListener
{
int number;
int code;
Label 提示;
TextField text1,text2;
Button buttonGetCode,buttonEnter;
WindowButton(String s)
{
super(s);
setLayout(new FlowLayout());
提示 = new Label("输入你的账号和密码",Label.CENTER);
提示.setBackground(Color.cyan);
add(提示);
text1 = new TextField(10);
text2 = new TextField(10);
text2.setEchoChar('*');
add(text1);
add(text2);
buttonEnter = new Button("登录");
add(buttonEnter);
buttonEnter.addActionListener(this);
setBounds(100,100,200,200);
setVisible(true);
validate();
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource() == buttonGetCode)
{
number = 123456;
code = 654321;
}
else if(e.getSource() == buttonEnter)
{
int i ;
int j ;
try{
i = Integer.parseInt(text1.getText());
j = Integer.parseInt(text2.getText());
if(i == number&&j == code)
{
提示.setText("登陆成功!");
}
else
{
提示.setText("密码错误!");
}
}
catch(NumberFormatException event)
{
提示.setText("请输入数字!");
}
}
}
}
public class ListFile {
public static void main(String args[]) {
WindowButton win = new WindowButton("登录窗口");
}
}
[最优解释]
需要把按钮buttonGetCode添加到窗口里并监听,加了代码楼主试试(另外加了一段退出的代码).
import java.awt.*;
import java.awt.event.*;
class WindowButton extends Frame implements ActionListener
{
int number;
int code;
Label 提示;
TextField text1,text2;
Button buttonGetCode,buttonEnter;
WindowButton(String s)
{
super(s);
setLayout(new FlowLayout());
提示 = new Label("输入你的账号和密码",Label.CENTER);
提示.setBackground(Color.cyan);
add(提示);
text1 = new TextField(10);
text2 = new TextField(10);
text2.setEchoChar('*');
add(text1);
add(text2);
//------添加buttonGetCode按钮,并监听
buttonGetCode =new Button("获得帐号密码");
add(buttonGetCode);
buttonGetCode.addActionListener(this);
//------
buttonEnter = new Button("登录");
add(buttonEnter);
buttonEnter.addActionListener(this);
setBounds(100,100,200,200);
setVisible(true);
validate();
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource() == buttonGetCode)
{
number = 123456;
code = 654321;
}
else if(e.getSource() == buttonEnter)
{
int i ;
int j ;
try
{
i = Integer.parseInt(text1.getText());
j = Integer.parseInt(text2.getText());
if(i == number&&j == code)
{
提示.setText("登陆成功!");
}
else
{
提示.setText("密码错误!");
}
}
catch(NumberFormatException event)
{
提示.setText("请输入数字!");
}
}
}
}
public class ListFile
{
public static void main(String args[])
{
WindowButton win = new WindowButton("登录窗口");
//----- 添加关闭窗口共功能
win.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
//------
}
}