Shulou(Shulou.com)06/03 Report--

Import java.util.Scanner

/ / user class

Class Users

{

String username

String password

Public Users (String username,String password) {

This.username = username

This.password = password

}

}

Public class LoginDome {

Users user

/ / determine the user name and password

Public boolean userLogin (String username,String password)

{

If (this.user.username.equals (username) & & this.user.password.equals (password))

{

Return true

}

Else

{

Return false

}

}

Public void setUser (Users user)

{

This.user = user

Public static void main (String [] args) {

String username

String password

Int iCount = 0; / / counter determines how many times to log in

Boolean flag = false;// to determine whether the login is successful or not

Scanner in = new Scanner (System.in)

System.out.println ("* user registration *")

System.out.println ("Please enter user name:")

Username = in.nextLine ()

System.out.println ("Please enter password:")

Password = in.nextLine ()

/ / keep the entered user and password

Users u = new Users (username,password)

LoginDome demo = new LoginDome ()

Demo.setUser (u)

System.out.println ("Registration successful!")

System.out.println ("* user login *")

Do {

System.out.println ("Please enter user name:")

Username = in.nextLine ()

System.out.println ("Please enter password:")

Password = in.nextLine ()

If (demo.userLogin (username,password)) / / call the method to determine whether the login is successful or not

{

Break

}

Else

{

ICount + +; / / number of records

If (iCount > = 3 & & flag = = false) / / if login fails more than 3 times

{

System.out.print ("if the login fails more than three times, the program will exit!")

System.exit (0)

}

Else

{

System.out.println ("Please check username and password")

}

}

} while (true)

}

}

* user registration *

Please enter a user name:

Liwen

Please enter your password:

123456

Registered successfully!

* user login *

Please enter a user name:

Li

Please enter your password:

two hundred and twenty two

Please check your user name and password

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.