Learning OOP and methods but missing something

[gnng]

Hoping someone can help me with this. I am almost done with this assignment but I have two problems - 1) I can't pass the className and classNumber info (which is in the method classInfo), and 2) my random answers are only picking the first choice.

Thanks for any help,

Gary

import java.util.*;
public class MathTutor
{
	// Instance variables - will need these so students can enter in their own info
	private String className;
	private int classNumber;
	private int randomNum1;
	private int randomNum2;
	private int result;
	private int studentAnswer;
	private int correctAnswer;
	private int wrongAnswer;

	Scanner keyboard = new Scanner(System.in);

	public void setClassInfo(String cName, int cNumber)
	{
		className = cName;
		classNumber = cNumber;
		System.out.println("Your class name is " + className + " and your class number is " + classNumber);
	}


	public void equalsNumber()
	{
		for (int counter = 0; counter < 5; counter++)
		{
			randomNum1 = (int) Math.round(Math.random()*9+1);
			randomNum2 = (int) Math.round(Math.random()*9+1);
			result = randomNum1 *randomNum2;

			System.out.println("What is " + randomNum1 + " x " + randomNum2);

			studentAnswer = keyboard.nextInt();

			if (result == studentAnswer)
			{
				correctAnswer();
				correctAnswer++;
			}
			else
			{
				wrongAnswer();
				wrongAnswer++;
			}
		}
	}

	public void correctAnswer()
	{
		int randomNumber = (int) Math.random()*5+1;
		switch (randomNumber)
		{
			case 1:
				System.out.println("You got it!");
			break;

			case 2:
				System.out.println("Exactly right!");
			break;

			case 3:
				System.out.println("Tremendous!");
			break;

			case 4:
				System.out.println("That works!");
			break;

			case 5:
				System.out.println("Nice Guess!");
			break;

			default:
				System.out.println("Error");
		}
	}

	public void wrongAnswer()
	{
		int randomNumber = (int) Math.random()*4+1;
		switch (randomNumber)
		{
			case 1:
				System.out.println("Don't give up!");
			break;

			case 2:
				System.out.println("You'll get it next time!");
			break;

			case 3:
				System.out.println("Try it again!");
			break;

			case 4:
				System.out.println("Sorry, keep trying!");
			break;

			default:
				System.out.println("Error");
		}

	}
	public String toString()
	{
		if (correctAnswer * 20 < 70)
		{
			return ("your course was " + className + " and section is " + classNumber +
				"\nyour total number correct out of 5 was " + correctAnswer +
				"\nyour total number incorrect was " + wrongAnswer +
				"\npercentage of correct responses is %" + correctAnswer * 20 +
				"\nPlease see instructor for help");
		}

		else
		{
				return ("your course was " + className + " and section is " + classNumber +
				"\nyour total number correct out of 5 was " + correctAnswer +
				"\nyour total number incorrect was " + wrongAnswer +
				"\npercentage of correct responses is %" + correctAnswer * 20);
		}
	}

	public boolean equals(MathTutor otherTutor)
	{
		return (this.correctAnswer == otherTutor.correctAnswer);
	}

	public String getClassName()
	{
		return className;
	}

	public int getClassNumber()
	{
		return classNumber;
	}




}

AND THE DRIVER PROGRAM

import java.util.Scanner;


public class MathTutorTest
{

// Main program method to get the work done
public static void main(String [] args)
	{

	Scanner keyboard = new Scanner(System.in);
	int runProgram = 0;
	MathTutor quiz = new MathTutor();

	System.out.println("What is the name of the class?");
	String className = keyboard.next();
	System.out.println("What is the course number?");
	int classNumber = keyboard.nextInt();
	quiz.setClassInfo(className, classNumber);
	System.out.println(quiz.classInfo());

	System.out.println("Would you like to test your math skills?");
	System.out.println("Please enter 1 for yes, 2 to exit");
	runProgram = keyboard.nextInt();

	if (runProgram == 1)
	{

			quiz.equalsNumber();
	}

	System.out.println(quiz.toString());


	}
}

[baf06]

First notice is that you are calling a method quiz.classInfo() when in your MathTutor you haven't declared such a method. so this is causing the first problem.
You don't need to print that out since in your setClassInfo you printed them already

[yellowledbet]

Try this where you are getting your random number I added a pair of parenthesis.

int randomNumber = (int) (Math.random()*5+1);

[gnng]

You guys are awesome! I got it to work. Amazing how you can stare at code for hours and not see the missing parenthesis. Thanks so much, you gave me back my Sunday!

[baf06]

You are welcome, and yes it happens so often that you stare a lot for a simple mistake :) and Have a nice Sunday pal :)