Thread: Confused with homework

Hi there.. I'm new to Java and don't fully understand yet how to call methods from other classes. If somebody could take a look at my code and offer suggestions, it'd be much appreciated. Here are my classes, Multiply and MultiplyTest:

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// Ch06_Assignment: MultiplyTest.java
// Author: Joshua Nelson
// Date: 3/5/2013

public class MultiplyTest
{
public static void main( String[] args )
{
Multiply myMultiply = new Multiply();

myMultiply.createQuestion();
myMultiply.quiz();
myMultiply.checkResponse(response);
} // end main
} // end class:MultiplyTest

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// Ch06_Assignment: Multiply.java
// Author: Joshua Nelson
// Date: 3/5/2013
import java.util.Scanner;
import java.util.Random;

public class Multiply
{
public static int product;

public static int createQuestion()
{
Random randomNumbers = new Random();
int num1 = randomNumbers.nextInt(9);
int num2 = randomNumbers.nextInt(9);
product = num1 * num2;
System.out.printf( "How much is %d times %d?", num1, num2 );
return product;
} // end method:createQuestion

public static void checkResponse( int guess )
{
if (guess != product)
System.out.println( "No. Please try again" );
else
{
System.out.println( "Very Good!" );
createQuestion();
} // end else
} // end method:checkResponse

public static int quiz()
{
createQuestion();
Scanner input = new Scanner( System.in );
System.out.println( "Enter your answer (-1 to exit):" );
int response = input.nextInt();
while (response != -1)
{
checkResponse(response);
System.out.println( "Enter your answer (-1 to exit):" );
response = input.nextInt();
} // end while
return response;
} // end method:quiz
} // end class:Multiply

You will want to tell us what the current code is supposed to be doing and what problems you are having with it. My experience here is that we're usually terrible at mind reading.