what the hell is the problem.... The main method should stop reading strings from the keyboard as soon as the entered string does not match one of the allowed strings ("user", "loser", "coder", "programmer").

Question about the task

Resolved

Does not want to verify.... "The main method should stop reading strings from the keyboard as soon as the entered string does not match one of the allowed strings ("user", "loser", "coder", "programmer")."

1. Enter a few strings (keys) from the keyboard [in a loop].
The following strings (keys) are allowed: "user", "loser", "coder", "programmer".
Stop reading in strings after reading in any string that does not match one of the above.

2. For each entered string:
2.1. Create the appropriate object [see Person.java], e.g. create a User object for the string "user".
2.2. Pass this object to the doWork method.

3. Write an implementation of the doWork method, which:
3.1. Calls the live() method on the passed object if person is a User.
3.2. Calls the doNothing() method if person is a Loser.
3.3. Calls the writeCode() method if person is a Coder.
3.4. Calls the enjoy() method if person is a Programmer.

Requirements:

The main method must read strings from the keyboard.
The main method should stop reading strings from the keyboard as soon as the entered string does not match one of the allowed strings ("user", "loser", "coder", "programmer").
For each correctly entered string ("user", "loser", "coder", "programmer"), call the doWork method with the appropriate Person object as the argument.
The Solution class must implement a doWork method with one Person parameter.
The doWork method should call the live() method on the passed object if it is a User.
The doWork method should call the doNothing() method on the passed object if it is a Loser.
The doWork method should call the writeCode() method on the passed object if it is a Coder.
The doWork method should call the enjoy() method on the passed object if it is a Programmer.

package com.codegym.task.task14.task1411; public interface Person { class User implements Person { void live() { System.out.println("I usually just live."); } } class Loser implements Person { void doNothing() { System.out.println("I usually do nothing."); } } class Coder implements Person { void writeCode() { System.out.println("I usually write code."); } } class Programmer implements Person { void enjoy() { System.out.println("It's a wonderful life!"); } } }

Comments (5)

Popular
New
Old

You must be signed in to leave a comment

Isenraf

Level 20 , Douala, Cameroon

11 July 2019, 15:23

your code only checks once and then breaks out of the loop, use else if statements as suggested by @Nithin.

Nithin

Level 35 , Hyderabad, India

11 July 2019, 08:30

your loop implementation is not correct. As per your code you will only get one iteration and will exit the loop. implement the while loop like this :

while(true)
        {    String s = reader.readLine();
            // Create an object. Item 2
            if(s.equals("user")){ .......}
           else if(s.equals("loser")){ .......}
            else if(s.equals("coder")){ ........}
            else if(s.equals("programmer")){ .........}
            else {reader.close(); break;}
        }

Picvajzmen

Level 20 , Belgrade, Serbia

15 July 2019, 05:46

I actualy tried that already, and it did not work.. With the code you wrote, it still does not wont to verify, saying : "The main method should stop reading strings from the keyboard as soon as the entered string does not match one of the allowed strings ("user", "loser", "coder", "programmer")."

Nithin

Level 35 , Hyderabad, India

15 July 2019, 06:00

in code i described above try removing reader.close() from else statement. write it as:

else {break;}

Picvajzmen

Level 20 , Belgrade, Serbia

15 July 2019, 07:14

solution

it was the curly brackets after the else statement... for whatever reason it did not want to verify because the break statement was not in curly brackets... and thank you.