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Thread: Compile Trouble

  1. #1
    adelgado0723 is offline Member
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    Default Compile Trouble

    netbeans says that it won't compile because of the GetData commands. Please help tell me why it won't run.
    Java Code:
    public class Student {
    
        private String id,  firstname,  lastname;
    
        Student(String i, String f, String l) {
            id = i;
            firstname = f;
            lastname = l;
        }
    
        String getid() {
            return id;
        }
    
        String getfirstname() {
            return firstname;
        }
    
        String getlastname() {
            return lastname;
        }
    }
    Java Code:
    import java.util.ArrayList;
    
    public class Admissions {
    
        Student student;
        ArrayList<Student> list;
        int index;
        boolean found;
    //2a
        Admissions() {
            list = new ArrayList<Student>();
        }
    //2b
        void add(Student s) {
            list.add(s);
        }
    //2c
        int size() {
            return list.size();
        }
    //2d
        boolean empty() {
            return list.isEmpty();
        }
    
        Student get(int i) {
            return list.get(i);
        }
    
        //2e
        void search(String id) {
            int i = 0;
            int length = list.size();
            while (i < length && !found) {
                student = list.get(i);
                if (student.getid().equalsIgnoreCase(id)) {
                    found = true;
                } else {
                    i++;
                }
            }
            index = i;
        }
    //2f 
        Student remove(int i) {
            return list.remove(i);
        }
    
        int getIndex() {
            return index;
        }
    
        Student getStudent() {
            return student;
        }
    
        boolean inList() {
            return found;
        }
    
        ArrayList getList() {
            return list;
        }
    }
    Java Code:
    import javax.swing.JOptionPane;
    import java.util.ArrayList;
    import javax.swing.JTextArea;
    import javax.swing.JScrollPane;
    
    class Registration {
    
        public static void main(String[] arg) {
            boolean done = false;
            final String menu = "1. Add Student \n2. Drop Student \n3. Print Report\n4. Exit";
            Admissions adm = new Admissions();
            Admissions drop = new Admissions();
            while (!done) {
                int option = GetData.getInt(menu);
                switch (option) {
                    case 1:
                        String last = GetData.getWord("Enter Lastname");
                        String first = GetData.getWord("Enter Firstname");
    
                        String id = GetData.getWord("Enter id number");
    
                        Student student = new Student(last, first, id);
                        adm.add(student);
                        break;
                    case 2:
                        if (!adm.empty()) {
                            id = GetData.getWord("Enter id number");
                            adm.search(id);
    
                            if (!adm.inList()) {
                                id = "ID number " + id;
                                JOptionPane.showMessageDialog(null, "student not registered", "Registration", JOptionPane.INFORMATION_MESSAGE);
                            } else {
                                int index = adm.getIndex();
    
                                Student s = (Student) adm.remove(index);
                                drop.add(s);
                            }
                        } else {
                            JOptionPane.showMessageDialog(null, "List is empty", "Registration", JOptionPane.INFORMATION_MESSAGE);
                        }
                        break;
    
                    case 3:
                        ArrayList list = adm.getList();
                        String str = "Students who are registered\n" + report(list);
                        JTextArea text = new JTextArea(str, 10, 30);
                        JScrollPane pane = new JScrollPane(text);
                        display(pane, "Report", JOptionPane.INFORMATION_MESSAGE);
                        break;
                    case 4:
                        display("Done!!!", "Terminating Admission", JOptionPane.WARNING_MESSAGE);
                        done = true;
                        break;
                    default:
                        display("", "Wrong option", JOptionPane.ERROR_MESSAGE);
                        break;
                }
            }
        }
    
        static String report(ArrayList list) {
            int length = list.size();
            String str = "";
            for (int i = 0; i < length; i++) {
                Student s = (Student) list.get(i);
                str = str + s.getid() + "  " + s.getfirstname() + "\n";
            }
            return str;
        }
    
        static void display(String info, String heading, int type) {
            JOptionPane.showMessageDialog(null, info, heading, type);
        }
    
        static void display(JScrollPane pane, String heading, int type) {
            JOptionPane.showMessageDialog(null, pane, heading, type);
        }
    }

  2. #2
    sukatoa's Avatar
    sukatoa is offline Senior Member
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    Default

    Can you post the reported exceptions?

    Be specific....

    regards,
    sukatoa

  3. #3
    fireball2008 is offline Member
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    Default

    First of all what is Getdata and where is this thing come from,

  4. #4
    bobleny's Avatar
    bobleny is offline Member
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    Default

    Are there any more classes? With what you gave us, I see 5 error in Registration; all pertaining to the GetData object.

    I don't know what it is that you are trying to do, but I do know, that you are calling on an object, GetData, that doesn't exist. So, you will have to create it.

    If your simply trying to ask the user to enter in the last name, then you might try:
    Java Code:
    String last = JOptionPane.showInputDialog(null, "Enter Lastname");
    Based on the information you provided, that is the best answer I can give you.

    Good luck!
    -- www.firemelt.net --
    Cheer up, the worst has yet to come...

  5. #5
    Christian121 is offline Member
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    Default

    ^If done that way, how would you alternate the code "int option = GetData.getInt(menu);" ?

  6. #6
    bobleny's Avatar
    bobleny is offline Member
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    Simple, you use the Integer.parseInt() method.
    Java Code:
    String stroption = JOptionPane.showInputDialog(null, menu, "Choose an Option:", JOptionPane.QUESTION_MESSAGE);
    int option = Integer.parseInt(stroption);
    If you really want to get fancy to avoid any error, use a try catch statement:
    Java Code:
    String stroption = JOptionPane.showInputDialog(null, menu, "Choose an Option:", JOptionPane.QUESTION_MESSAGE);
    int option;
    try
    {
        option = Integer.parseInt(stroption);
    
    }
    catch(Exception E)
    {
        option = 0;
    }
    And life is good....
    -- www.firemelt.net --
    Cheer up, the worst has yet to come...

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