Question

在Java中怎样将密码设为隐式的

Answer 1

import java.awt.*;
import java.awt.event.*;

public class myFrame3 extends Frame implements ActionListener {
Button bnSure ;
Button bnReset;
TextField user;
TextField pass;
public myFrame3(){
super("用户身份验证");
Label username = new Label("用户名");
Label password = new Label("密码");
user = new TextField(10);
pass = new TextField(10);
pass.setEchoChar('*');//这里设置符号 使密码不可见
bnSure = new Button("确定");
bnReset = new Button("重置");
setVisible(true);
setBounds(100,100,200,200);
setLayout(new FlowLayout());
add(username);add(user);add(password);add(pass);add(bnSure);add(bnReset);
bnSure.addActionListener(this);
bnReset.addActionListener(this);

}
public void actionPerformed (ActionEvent e){
String users = new String("1234");
String passw = new String("1234");

String suser = user.getText();
String pas = pass.getText();

if(e.getActionCommand().equals("确定"))
{
if(passw.equals(pas)&&users.equals(suser))
{
user.setText("Welcome");
pass.setText("");
}
else
{
user.setText("用户名或密码错误");
pass.setText("");
}
}
else{
user.setText("");
pass.setText("");
}
}
public static void main(String args[]){
myFrame3 a = new myFrame3();
a.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
e.getWindow().dispose();
}
});
}

}

Answer 2

JPasswordField passText;
passText.setEchoChar('●');
让密码显示为●

Answer 3

用password 标签 自动就是隐式的！

Answer 4

<input type="password" id="" />

结分