my midterm

import java.util.Scanner;

public class Midterm {

    //a global scanner for you
    static Scanner input;

    //sample test class
    public static void main(String[] args) {
        input = new Scanner(System.in);

        compareNumericalInput();
        findAverage();
        System.out.println(makeMeAllCaps("i used to have small letters"));
        watchMeLoop();
        System.out.printf("%b\n%b\n", isEven(2), isEven(3));
        yayForArrays();

        input.close();
    }

    //prints information about the two given numbers
    public static void compareNumericalInput() {
        int num1, num2;

        //ask user for numbers
        System.out.print("Enter two integers: ");
        num1 = input.nextInt();
        num2 = input.nextInt();

        //check which is greater and by how much
        if(num1 > num2)
            System.out.printf("%d is larger than %d by %d.\n", num1, num2, num1 - num2);
        else if (num1 < num2)
            System.out.printf("%d is larger than %d by %d.\n", num2, num1, num2 - num1);
        else
            System.out.printf("%d and %d are equal.\n", num1, num2);

        //test if num1 is even
        if(isEven(num1))
            System.out.printf("%d is even.\n", num1);
        else
            System.out.printf("%d is odd.\n", num1);

        //test if num2 is even
        if(isEven(num2))
            System.out.printf("%d is even.\n", num2);
        else
            System.out.printf("%d is odd.\n", num2);

    }

    //generate two random ints and take average
    public static void findAverage() {
        int rand1 = (int)(Math.random() * 98.0) + 1;
        int rand2 = (int)(Math.random() * 98.0) + 1;

        System.out.printf("The average of %d and %d is %f.\n", rand1, rand2, (double)(rand1 + rand2) / 2.0);
    }

    //turn String into all uppercase
    public static String makeMeAllCaps(String str) {
        return str.toUpperCase();
    }

    //run some loops
    public static void watchMeLoop() {
        int i;
        int num;

        //do findAverage 50 times, with a for loop
        for(i = 0; i < 50; i++) {
            findAverage();
        }

        //print 50 odd numbers, with a while loop
        i = 0;
        while(i < 50) {
            num = 0;
            while(isEven(num))
                num = (int)(Math.random() * 10);

            System.out.printf("%d\n", num);
            i++;
        }
    }

    //test if an int is even
    public static boolean isEven(int number) {
        return number % 2 == 0;
    }

    //do array stuff
    public static void yayForArrays() {
        int i;
        int sum = 0;
        int evencount = 0;
        int maximum = Integer.MIN_VALUE;
        int minimum = Integer.MAX_VALUE;
        int[] array = new int[50];

        //fill with random ints
        for(i = 0; i < array.length; i++)
            array[i] = (int)(Math.random() * 100);

        //array tests
        for(i = 0; i < array.length; i++) {
            //evenness
            if(isEven(array[i]))
                evencount++;

            //maximum
            if(array[i] > maximum)
                maximum = array[i];

            //minimum
            if(array[i] < minimum)
                minimum = array[i];

            //get sum
            sum += array[i];
        }

        //print info
        System.out.printf("Minimum: %2d\nMaximum: %2d\nAverage: %2f\nAmount Even: %d", minimum, maximum, (double)sum / (double)array.length, evencount);
    }
}