Thread: My code is not displaying on the console. In need of much help!

I'm trying to display some project and quiz scores to the console but the console is not displaying anything when I try to run the code. It just shows an empty screen.

Here is the student class:

 public class Student {
 
 
     private String firstname;
 
     private String lastname;
 
     private int studentID;
 
     private double[] projects;
 
     private double[] quizzes;
 
    public Student(String firstname, String lastname, int ID) {
 
    firstname = firstname;
    lastname = lastname;
    studentID = ID;
    projects = new double[15];
    quizzes = new double[10];
 
 
    int i = this.projects.length - 1;
    while (i >= 0){
    this.projects[i] = -1;
    i--;
    }
 
    int i1 = this.quizzes.length - 1;
    while (i1 >= 0){
    this.quizzes[i1] = -1;
    i1--;
 
    }
    }
 
 
    public boolean setProjectScore(double projectScore, int projectID){
 
        if ((projectID >= projects.length) || (projectID < 0)) {
 
        return false;
 
    }
    else {
 
        projects[projectID] = projectScore;
 
        return true;
    }
 
    }
 
 
 
    public boolean setQuizScore(double quizScore, int quizID){
 
        if ((quizID >= quizzes.length) || (quizID < 0)) {
 
        return false;
    }
    else {
 
        quizzes[quizID] = quizScore;
 
        return true;
    }
 
    }
 
 
    public int getProjectsLength(){
 
        return this.projects.length;
 
    }
 
    public int getQuizzesLength() {
 
         return this.quizzes.length;
 
        }
 
 
    public double getProjectScore(int index){
 
        if (index < 0 || index > projects.length -1) {
 
            return -1;
        }
        return projects[index];
    }
 
 
 
    public double getQuizscore(int index) {
 
        if (index < 0 || index > quizzes.length -1) {
 
            return -1;
 
        }
        return quizzes[index];
    }
 
    public String getProjectScoreForID(int ID){
        String grade = "";
 
        if(ID<=this.projects.length-1){
 
            if (projects[ID] >= 90) {
                grade = "A";
            }
            else if (80 <= projects[ID] && projects[ID] < 90) {
                grade = "B";
            }
            else if (70 <= projects[ID] && projects[ID] < 80) {
                grade = "C";
            }
            else if (60 <= projects[ID] && projects[ID] < 70) {
                grade = "D";
            }
            else if (50 <= projects[ID] && projects[ID] < 60) {
                grade = "F";
            }
        }
 
        return grade;
    }
 
    public String getQuizScoreForID(int ID){
 
        String grade = "";
 
        if(ID<=this.quizzes.length-1){
 
            if (quizzes[ID] >= 90) {
                grade = "A";
            }
            else if (80 <= quizzes[ID] && quizzes[ID] < 90) {
                grade = "B";
            }
            else if (70 <= quizzes[ID] && quizzes[ID] < 80) {
                grade = "C";
            }
            else if
 
            (60 <= quizzes[ID] && quizzes[ID] < 70) {
 
            	grade = "D";
            }
 
 
            else if (50 <= quizzes[ID] && quizzes[ID] < 60) {
                grade = "F";
 
 
            }
 
        }
 
        return grade;
    }
 
    public int getNextQuizIndex(){
 
        int i = 0;
    do {
 
        if (quizzes[i] == -1.0){
 
        return i;
    }
 
    i++;
 
    }
 
    while (i < quizzes.length);
                  return -1;
    }
 
 
 
 
    public int getNextProjectIndex(){
 
        int i = 0;
    do {
 
        if (projects[i] == -1.0){
 
        return i;
    }
 
    i++;
 
    }
 
    while (i < projects.length);
 
 
    return -1;
    }
 
    }

  public class Main {
 
 
 
        public static void main(String[] args) {
 
            Student jimmy = new Student(null, null, 0);
 
            int currentIndex=0;
            int projectLength = jimmy.getProjectsLength();
            int quizLength = jimmy.getQuizzesLength();
 
            while (currentIndex <= projectLength){
                System.out.println(jimmy.getProjectScoreForID(currentIndex));
                currentIndex++;
            }
            while (currentIndex <= quizLength) {
                System.out.println(jimmy.getQuizScoreForID(currentIndex));
                currentIndex++;
            }
    }
    }

Like this?

System.out.println(projectLength);

I added that before the while loop and the console just printed out 15 which is how many project scores there are. How can I display the grades of the projects?

Thanks for the help

Are u talking about in the main method?

sorry but I was not sure how to write the 'else' statement so I tried something like this:

else {

grade = "-1";
}

I'm sure that is wrong :\

debug printlns? I'm sorry but I've yet to hear of these or is that how one uses debugging? I've yet to debug a project since I'm still so new :\

but I've added this line after the jimmy object

jimmy.setProjectScore(100,0);

It has printed the grade 'A' and -1 for the rest of the scores

I am expecting the grades in getProjectScoreForID() to display in the console. Once I have those grades displayed, I'll continue on with the rest of the grades for project and quiz.

My project is to display a student name with 15 project scores and 10 quiz scores.

I was trying to use the main method to pull the grades from getProjectScoresForID with this:

System.out.println(jimmy.getProjectScoreForID(curr entIndex));

I'm using the if statements for the grades and am now using this in the main method to pull the grades from the if statements:

jimmy.setProjectScore(100,0);
jimmy.setProjectScore(85,0);
jimmy.setProjectScore(73,0);

The only problem is that only the second entry is displaying the grade i.e. 85 'B'