AverageArrays.java

import javax.swing.*;

public class AverageArrays {

    public static void printHeader() {
        System.out.println("\nReport Card\n"); // or put own header here
    } // printHeader()

    public static int calcAvg(int[] grades) {
        int sum = 0;
        for (int i = 0; i < grades.length; i++) {
            sum += grades[i];
        } // for

        int gradesAvg = sum/grades.length;
        return gradesAvg;
    } // calcAvg()

    public static void printReportCard(int[] mathGrade, int[] englishGrade) {
        int mathAvg = calcAvg(mathGrade);
        int englishAvg = calcAvg(englishGrade);
        int combinedAvg = (mathAvg+englishAvg)/2;

        printHeader();
        System.out.printf("Math average: \t\t%3d%n", mathAvg);
        System.out.printf("English average: \t%3d%n", englishAvg);
        System.out.printf("Combined average: \t%3d%n", combinedAvg);
    } // printReportCard()

    public static void main(String[] args) {
        int mathnumber = Integer.parseInt( JOptionPane.showInputDialog
        ("How many math tests do you wish to enter?"));

        int [] mathGrade = new int [mathnumber];
        for (int i = 0; i < mathGrade.length; i++) {
            mathGrade[i] = Integer.parseInt( JOptionPane.showInputDialog
            ("Enter your math test grade: "));
        } // for

        int englishnumber = Integer.parseInt( JOptionPane.showInputDialog
        ("How many english tests do you wish to enter?"));

        int [] englishGrade = new int [englishnumber];
        for (int i = 0; i < englishGrade.length; i++) {
            englishGrade[i] = Integer.parseInt( JOptionPane.showInputDialog
            ("Enter your english test grade: "));
        } // for

        printReportCard(mathGrade, englishGrade);
    } // main()
} // class AverageArrays