The code build is "succesful" but nothing happens...

Question

I have a problem with the code, what it is supposed to do is get the grades inputed from the user, calculate an average and then print it. I have one marked error in the code and its the " edp.processStudents();" part. Also, when i run the code nothing happens, it just tell me build successful (using NetBeans). Please help me get the code right< thanks in advance>
import java.text.DecimalFormat;
import javax.swing.JOptionPane;
import javax.swing.*;
import java.util.*;
public class EdronProject {
private int studentCount;
private static final String USAGE = "Usage: java EdronProject <student count>";
private List<Student> list;
public EdronProject(int count) {
studentCount = count;
list = new ArrayList<Student>();
public static void main( String args[] ) throws NumberFormatException {
int count = 0;
switch (args.length) {
case 1: count = Integer.parseInt(args[0]); break;
default: System.out.println(USAGE); System.exit(0);
EdronProject edp = new EdronProject(count);
edp.processStudents();
edp.printStudents();
class Student {
private int total,
gradeCounter,
grade1,
grade2,
grade3,
grade4,
grade5,
counter;
private double average;
private String gradeString,
studentName;
public void setStudentName(String name) {
studentName = name;
public String getStudentName() {
return( studentName );
public void setGrade(int gradeNo, int grade) throws IllegalArgumentException {
switch( gradeNo) {
case 1 : grade1 = grade; break;
case 2 : grade2 = grade; break;
case 3 : grade3 = grade; break;
case 4 : grade4 = grade; break;
case 5 : grade5 = grade; break;
default: throw new IllegalArgumentException("ERROR: Bad grade number passed!");
public int getGrade(int gradeNo) throws IllegalArgumentException {
int grade = 0;
switch( gradeNo) {
case 1 : grade = grade1; break;
case 2 : grade = grade2; break;
case 3 : grade = grade3; break;
case 4 : grade = grade4; break;
case 5 : grade = grade5; break;
default: throw new IllegalArgumentException("ERROR: Bad grade number passed!");
return( grade );
public void processStudents() {
for (int counter = 0; counter < studentCount; counter++) {
Student student = new Student();
student.setStudentName(JOptionPane.showInputDialog("Enter student's name:"));
student.setGrade(1, Integer.parseInt(JOptionPane.showInputDialog( "Enter Student Grade for Psychology ")));
student.setGrade(2, Integer.parseInt(JOptionPane.showInputDialog( "Enter Student Grade for Math ")));
student.setGrade(3, Integer.parseInt(JOptionPane.showInputDialog( "Enter Student Grade for Art ")));
student.setGrade(4, Integer.parseInt(JOptionPane.showInputDialog( "Enter Student Grade for Science ")));
student.setGrade(5, Integer.parseInt(JOptionPane.showInputDialog( "Enter Student Grade for English ")));
list.add(student);
total = grade1 + grade2 + grade3 + grade4 + grade5;// add grade to total
DecimalFormat fmt= new DecimalFormat(".##");
average=total/gradeCounter;// calculate average of all grades entered
System.out.println(average);
public void printStudents() {
for ( int i = 0; i < list.size(); i++ ) {
Student s = list.get(i);
printStudent(s);
private void printStudent(Student student) {
System.out.println("Student Name: "+student.getStudentName()
+", Pych: "+student.getGrade(1)
+", Math: "+student.getGrade(2)
+", Art : "+student.getGrade(3)
+", Sci : "+student.getGrade(4)
+", Eng : "+student.getGrade(5)+"\n");

Answer 1

Java_Learner31 wrote:
ok everyone calm down, it you do not wish to help me its fine, no worries :)I tried to be nice and I helped you in your other posting.
You waste peoples time by not reading replies and posting the same sh*t twice.
Stay with one post per problem and don't expect "teh codez", then you'll be fine. Now go and read my response in your other thread.