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Thread: Java user input

  1. #1
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    Default Java user input

    Okay im trying to get when a user inputs a question the java program will output a pre written answer. I have the following code


    import java.util.Scanner;
     
     
    public class Main {
    	public static void main(String[] args){
    	Scanner user_input = new Scanner( System.in );
     
    	String username;
    	System.out.print("Username ");
    	username = user_input.next();
     
     String user_input1;
     user_input1 = ("Admin");
    			System.out.println("Welcome Admin");
     
    	}
    }


  2. #2
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    Default Re: Java user input

    You say "Okay im trying to get when a user inputs a question the java program will output a pre written answer."

    Are you only expecting one question?

    Also . . . change

    username = user_input.next();

    to


    username = user_input.nextLine();

    I'd consider two things: If you only require one entry:

    import java.util.Scanner;
     
     
    public class Main {
    	public static void main(String[] args){
    	Scanner user_input = new Scanner( System.in );
     
    	String username;
    	System.out.print("Username: ");
    	username = user_input.nextLine();
     
     String user_input1;
     user_input1 = ("Admin");
     System.out.println(username);			
     System.out.println("Welcome Admin");
     
    	}
    }

    But I think you are probably talking about more than one possible question (entry).

    In that case, you'd be better off looking at using an ArrayList
    to store your entries and responses. Then you can check the
    arraylist for an entry, and provide the corresponding response.

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  4. #3
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    Default Re: Java user input

    I am trying to make it into a multiple list multiple questions type thing but thanks ill take a look into that

  5. #4
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    Default Re: Java user input

    I created a project similar to what you are talking about. ArrayList works good for it, but you will want to create a class for the questions and answers. Creating a class and passing it to the arrraylist will save you a whole lot of headaches regarding how to keep the questions and answers organized.

    You will want something to the effect of:

    import java.util.ArrayList;
     
    public class QnA {
            strQuestion = "";
            strAnswer = "";
    }
     
    QnA qna = new QnA();
    ArrayList<QnA> qnaArrayList = new ArrayList<QnA>();
     
    qna.strQuestion = "Who is the wildest coyote in the world?";
    qna.strAnswer = "Wilie Coyote, of course!!";
     
    qnaArrayList.add(qna);

    This is just a cobbled together code piece, I did not test it, I don't want to do
    all of your work for you. One thing you NEED to remember though.
    Each time you add a question and answer pair to the ArrayList, you need
    to create a NEW qna class . . . . as in . . . . QnA qna = new QnA();
    If you do not do that, you will just be over-writing the first one you
    put in.

    You will find it MUCH easier passing a class to the arraylist
    than trying to handle the questions and answers individually!
    Also, you can modify the class and add more features.
    I added file information, correct answer info, and info about
    the questions in a header on mine. There is an easy way
    to randomize too if you use a class type.

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