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I included tags in the parts of the code I altered that explain it.

I noted the couple tweaks that had to be made


PrintWriter prw = new PrintWriter("outfile5B.txt");
Scanner kb = new Scanner(System.in);

String input;
int num, sum = 0, numAmount;...

When you declare the Scanner variable, it automatically begins to read for user input. It will pause at userInput.hasNextInt until it reads input.
So basically, user input is stored separately from...

I'm on Vista and Java 1.6. Note that's not a full code though. In full, it would look something like


import java.awt.*;
import java.lang.Math;

public class RandomNumberGenerator {
public...

I'd recommend just using the math library approach


import java.lang.Math;

addsubnumber1 = (int) Math.floor(Math.random()*21);
addsubnumber2 = (int) Math.floor(Math.random()*21);

I was wondering if Java has the capability of writing onto a computer's graphics display without opening a window or applet. I.e. - If I wanted to display text on top of my browser while still being...