Thread: Hey, I'm new to Java and just have a few queries

I've never used Java before today so I'm really clueless about the possibilities and such, I've made a really simple math quiz using notepad and command prompt but I'm wondering if there is a better way to make it have more questions other than adding each one manually.

Is there anything that would let me massively condense the amount of code needed for say 30 questions, or any way to let the user input how many questions they want at the start and have that amount created?

Instead of having multiple random number variables I'd just have two that were reset each question and instead of putting the same code over I'd just have it once and on a loop until the 30th question, is this possible to do?

Any help would be appreciated, below is what I have so far - I'd like to emphasis this isn't for school or anything like that, I'm just hoping to learn Java in my free time. Also I don't want somebody to code for me, just point me in the right direction.

import java.io.*; 
import java.util.*;
 
class Test2 {
  public static void main (String[] args) throws IOException {
 
    BufferedReader Answer = new BufferedReader
      (new InputStreamReader(System.in));
 
    int num1, num2, correct1, correct2, score;
 
    int a = (int)(5.0 * Math.random()) + 5;
    int b = (int)(5.0 * Math.random()) + 5;
    int c = (int)(5.0 * Math.random()) + 5;
    int d = (int)(5.0 * Math.random()) + 5;
 
    System.out.print ("What is " +a+ " * " +b+ "? ");
    System.out.flush(); 
    num1 = Integer.parseInt( Answer.readLine());
 
if(num1 == a * b) 
      {
        correct1 = 1;
      }
      else{
         correct1 = 0;
      }
 
    System.out.print ("What is " +c+ " * " +d+ "? ");
    System.out.flush(); 
    num2 = Integer.parseInt( Answer.readLine());
 
if(num2 == c * d) 
      {
	correct2 = 1;
      }
      else
      {
         correct2 = 0;
      }
 
    score = correct1 + correct2; 
    System.out.println("You scored " + score + " out of 2.");
 }

Hello Pseudonym134.

Welcome to the Java Programming Forums

I can see what you are doing here and everything you are looking to achieve is possible.

Please bare with me as I'm working on an example to show you.. I can point you in the right direction but I feel showing you my example will help you to understand better.

Hello again Pseudonym134.

I have written this example for you. It will ask the user how many questions they would like and then ask that amount of questions.

This is simple code but requires some programming logic. I hope you can see how this all works

import java.util.*;
 
public class JpfTest2 {
 
    /**
     * JavaProgrammingForums.com
     */
 
    public static int questions, count, a, b, correct, answer;
 
    public static void askQuestion() {
 
        // Loop by amount of questions
        for(int a = 0; a < questions; a++){
        generateQuestion();
        }
 
        System.out.println("You got " + correct + " questions right.");
 
    }
 
    public static void generateQuestion() {
 
        a = (int) (5.0 * Math.random()) + 5;
        b = (int) (5.0 * Math.random()) + 5;
 
        System.out.println("What is " + a + " * " + b + "? ");
 
        Scanner sc2 = new Scanner(System.in);
        answer = sc2.nextInt();
 
        if(answer == a * b) 
          {
            correct++;
          }
    }
 
 
    public static void main(String[] args) {
 
        System.out.println("Welcome to the Maths Quiz! ");
        System.out.println("How many questions would you like? ");
 
        // Scanner class for user input
        Scanner sc = new Scanner(System.in);
        questions = sc.nextInt();
        System.out.println("I will ask you " + questions + " questions:");
        System.out.println("");
 
        askQuestion();
    }
 
}