Comparing numbers in two arrays

Question

OK I am making a lottery program in Java. The idea is a user enters 4 numbers, they are saved to disk. A user then starts the draw which creates 4 random numbers and compares them with the numbers a user has chosen and sees if there are any matches. Here's what I have in my Do_Draw method
public static void Do_Draw() {
        String input;
        int Numbers[] = new int[5];
        int[] numbers = new int[4]; //array declared
        int numBalls = 4; //integer
        int[] balls = new int[numBalls];
        for (int i = 0; i < balls.length; i++) {
            balls[i] = i + 1;
        for (int i = 0; i < numbers.length; i++) {
            int drawnBall = (int)(Math.random() * numBalls);
            numbers[i] = balls[drawnBall];
            balls[drawnBall] = balls[numBalls - 1];
            numBalls--;
            System.out.print(numbers[i] + " "); //print out numbers for user to see
            try {
                FileOutputStream assfile = new FileOutputStream("a:/draw.txt", true); //true allows the file to be appended
                PrintStream myOutput = new PrintStream(assfile);
                myOutput.println(numbers);
} //end of try
catch (IOException e) {
System.out.println("error writing to file, please check your disk");
System.exit(0);
} //end of error message
JOptionPane.showMessageDialog(null, "The draw has taken place, Thank You");
int matches = 0;
for (int i = 0; i < numbers.length; i++) {
for (int j = 0; j < Numbers.length; j++) {
if (numbers[i] == Numbers[j])
matches++;
System.out.print("You have matched" + matches);
I get a repeated message at the end, I know this but it does tell me if I have any matches. It always tells me I have no matches though. It compiles fine and looks ok but I am not sure why it is not matches. Cheers for all your help

Answer 1

Hmm...you are trying to match numbers in number[] to Number[], but you do not assign any numbers to Number. I ran your program an Numbers is just full of zeros, so all you need is to enter the numbers the user wants into Number array and you should be fine...if this doesnt work, feel free to write me again.