java 密码为星号 (*)
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时间：2020-10-31 20:07:41 来源:igfitidea点击:
Password as asterisk (*)
提问by Sojib
my password program can hide keyboard input . its invisible when i type password.
我的密码程序可以隐藏键盘输入。当我输入密码时它是不可见的。
But my qus is how can show password input as asterisk (*)
但我的问题是如何将密码输入显示为星号（*）
can any one help me please? :p
有人可以帮我吗？:p
my code is here:
我的代码在这里：
public void login()
{
Scanner input = new Scanner(System.in);//create Scanner object
System.out.println("\n");
Console console = System.console();
char[] ad_password = "admin".toCharArray();
char[] sm_password = "salesman".toCharArray();
char[] passwordEntered = console.readPassword("Enter Password To Access The Project ( As Admin / Sales Man ): ");
if (Arrays.equals(ad_password, passwordEntered))
{
System.out.println("\n Congratulation!!! Access granted \n");
System.out.println("\n Welcome Admin. :-) \n\n");
Shoping_mall obj_ad_dis=new Shoping_mall();
obj_ad_dis.ad_dis();
}
else if(Arrays.equals(sm_password, passwordEntered))
{
System.out.println("\n Congratulation!!! Access granted \n");
System.out.println("\n Welcome Sales Man. :-) \n\n");
Shoping_mall obj1_sm_dis=new Shoping_mall();
obj1_sm_dis.sm_dis();
}
else
{
System.out.println("\n Error: Your Password Doesn't Meet. Access Denied !!! :-( \n\n");
System.out.println("\n Enter Correct Password.\n\n");
Shoping_mall obj_login=new Shoping_mall();//creat object for calling Admin_works() method
obj_login.login();
}
}
回答by Survivor
You can use JPasswordField to do that; Below is an example:
您可以使用 JPasswordField 来做到这一点；下面是一个例子：
private JPasswordField password;
private String typedPassword;
private final String defaultPassword = "yourDesiredPassword";
public void createPasswordField(){
password = new JPasswordField(30);
password.setBounds(280, 240, 90, 20);
password.setEchoChar('*');
password.setBackground(Color.white);
password.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
password = (JPasswordField) e.getSource();
char [] tempPass = password.getPassword();
typedPassword = new String(tempPass);
if (!typedPassword.equals(defaultPassword)){
JOptionPane.showMessageDialog(null,
"Your password is not correct",
"Stack Over Flow example",
JOptionPane.ERROR_MESSAGE);
}
}
});
}
