我有一个包含五个的程序。txt文件。这些文件被读入并放入不同的数组中。一个是一系列的名字。另外四个是带有测试分数的数组。

目前，该程序确实正确创建了阵列。接下来，程序将计算并显示每个测试的平均值（这很好）。然后程序会提示用户输入名称。如果找到一个名称，一个新的菜单将提示用户选择他们想要数据的测试。（这很好用）。

问题是：我在另一页上有主程序课和另一个成绩册课（做计算）。如何将这两页连接在一起？

例如：如果studentName是'Andrew'，并且在studentNameArray中找到了它，我选择了我想要查看的测试分数的1（scoreOneArray），说出数字88。我的程序找到了“Andrew”和“88”。它没有做的是将“Andrew”和“88”发送到成绩册，让数据计算测试百分比（88/100），并找到相应的字母成绩（在本例中为“B”）。最后，打印学生姓名、考试成绩（88%）和字母成绩。

Program (main):

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws IOException {
        double test1Calculation;
        double test2Calculation;
        double test3Calculation;
        double test4Calculation;
        int i, j, k, l;
        int testOneSum = 0;
        int testTwoSum = 0;
        int testThreeSum = 0;
        int testFourSum = 0;
        int checker = 0;
        int index=0;
        String choice;

        Scanner students = new Scanner(new File("names.txt"));
        Scanner TestOne = new Scanner(new File("testOne.txt"));
        Scanner TestTwo = new Scanner(new File("testTwo.txt"));
        Scanner TestThree = new Scanner(new File("testThree.txt"));
        Scanner TestFour = new Scanner(new File("testFour.txt"));

        String token1 = "";
        List studentName = new ArrayList<>();
        while (students.hasNext()) {
            // find next line
            token1 = students.next();
            studentName.add(token1);
        }

        String[] studentNameArray = studentName.toArray(new String[0]);

        List scoreOne = new ArrayList<>();

        // while loop
        while (TestOne.hasNext()) {
            // find next line
            Integer token2 = TestOne.nextInt();
            scoreOne.add(token2);
        }

        Integer[] scoreOneArray = scoreOne.toArray(new Integer[0]);

        List scoreTwo = new ArrayList<>();

        // while loop
        while (TestTwo.hasNext()) {
            // find next line
            Integer token3 = TestTwo.nextInt();
            scoreTwo.add(token3);
        }

        Integer[] scoreTwoArray = scoreTwo.toArray(new Integer[0]);

        List scoreThree = new ArrayList<>();

        // while loop
        while (TestThree.hasNext()) {
            // find next line
            Integer token4 = TestThree.nextInt();
            scoreThree.add(token4);
        }

        Integer[] scoreThreeArray = scoreThree.toArray(new Integer[0]);

        List scoreFour = new ArrayList<>();

        // while loop
        while (TestFour.hasNext()) {
            // find next line
            Integer token5 = TestFour.nextInt();
            scoreFour.add(token5);
        }

        Integer[] scoreFourArray = scoreFour.toArray(new Integer[0]);

        for (i = 0; i < scoreOneArray.length; i++)
            testOneSum += scoreOneArray[i];
        test1Calculation = (double) testOneSum / 5;

        for (j = 0; j < scoreTwoArray.length; j++)
            testTwoSum += scoreTwoArray[j];
        test2Calculation = (double) testTwoSum / 5;

        for (k = 0; k < scoreThreeArray.length; k++)
            testThreeSum += scoreThreeArray[k];
        test3Calculation = (double) testThreeSum / 5;

        for (l = 0; l < scoreFourArray.length; l++)
            testFourSum += scoreFourArray[l];
        test4Calculation = (double) testFourSum / 5;

        System.out.println("The average for test one is: " + test1Calculation);
        System.out.println("The average for test two is: " + test2Calculation);
        System.out.println("The average for test three is: " + test3Calculation);
        System.out.println("The average for test four is: " + test4Calculation);

        Scanner studentSearch = new Scanner(System.in);
        System.out.println("Enter student name : ");
        String foundStudent = studentSearch.nextLine();
        boolean found = Arrays.stream(studentNameArray).anyMatch(t -> t.equals(foundStudent));
        if (found) {
            index++;
            System.out.println(foundStudent + " is found.");

            //menu loop
            do {
                //displayed user options
                System.out.println("1. To find score for first test");
                System.out.println("2. To find score for second test");
                System.out.println("3. To find score for third test");
                System.out.println("4. To find score for fourth test");

                //menu choices
                Scanner keyboard = new Scanner(System.in);
                System.out.print("
Enter your choice: ");
                choice = keyboard.next();

                if (choice.equals("1")) {
                    int  score= scoreOneArray[index];

                    System.out.println(score);
                    checker = -1;
                } else if (choice.equals("2")) {
                    int  score= scoreTwoArray[index];
                    System.out.println(score);
                    checker = -1;
                } else if (choice.equals("3")) {
                    int  score= scoreThreeArray[index];
                    System.out.println(score);
                    checker = -1;
                } else if (choice.equals("4")) {
                    int  score= scoreFourArray[index];
                    System.out.println(score);
                    checker = -1;
                } else {
                    //Error message
                    System.out.println("invalid choice");
                }
            }
            while (checker != -1);
        } // End of Menu Method
        else {
            System.out.println(foundStudent + " is not found.");}
        

        students.close();
        TestOne.close();
        TestTwo.close();
        TestThree.close();
        TestFour.close();

    }
}

Calculations(GradeBook):

import java.util.ArrayList;

public class GradeBook {

    private char[] letterGrade = {'A', 'B', 'C', 'D', 'F'};
    private ArrayList names = new ArrayList<>();
    private double [][] scores = new double[5][4];

    public GradeBook(ArrayList studentNames, double[][] studentScores){
        this.names = studentNames;

        for (int i = 0; i < 5; i++){
            for (int j = 0; j < 4; j++){
                scores [i][j] = studentScores[i][j];
            }
        }
    }
    public  String getName(int studentIndex){
        return names.get(studentIndex);
    }
    public double getAverage(int studentIndex){
        double total = 0;

        for (int i = 0; i < 4; i++){
            total += scores[studentIndex][i];
        }
        return (total / 4);
    }
    public char getLetterGrade(double avgScore){

        if (avgScore >= 90 && avgScore <= 100){
            return letterGrade[0];
        }
        else if (avgScore >= 80 && avgScore <= 89){
            return letterGrade[1];
        }
        else if (avgScore >= 70 && avgScore <= 79){
            return letterGrade[2];
        }
        else if (avgScore >= 60 && avgScore <= 69){
            return letterGrade[3];
        }
        else if (avgScore >= 0 && avgScore <= 59){
            return letterGrade[4];
        }
        return ' ';
    }
    public void getStudent(){

        for (int i = 0; i < names.size(); i++){

            System.out.println("
Student #" + (i+1)
            +"
		Name: " + names.get(i)
            +"
		Average: " + getAverage(i) + "%"
            +"
		Letter Grade: " + getLetterGrade(getAverage(i))
            +"

");
        }

    }
}