Remove object and doesnt update salary

Question

i was testing my app today and found out that for some reason, when i unattach and object from each other - it doesnt update the mentor's salary for some reason :-/
it kinda does but not properly
for every java programmer the salary increased by 5% - thats done. so lets say we start with basic salary of 1000 - 10% of it is 1100
it does that fine
then if a mentor has a mentee - 5% increase PER mentee
so if we have 1 mentee to a mentor it should be 1155
if we remove the mentee from the mentor - the mentors salary should be 1100
but it doesnt do it :-/
must be invalid calcs in my program but dont know what
if we add a mentee to a mentor - mentors salary is 1270
then if we remove the mentee from mentor - the mentors salary is 1210
any ideas?
//this is in the programmer class:
    public int    getMonthlySalary() {   
        int monthlysalary = super.getMonthlySalary();
        int bonus = 0;
        if(theLanguage.equals("Java") == true || theLanguage.equals("java") == true)
             bonus = (int) (monthlysalary * 0.1);
        return monthlysalary + bonus;
    }  this is in the mentor class:
        int monthlySalary = super.getMonthlySalary();
        int bonus = 0;
        int numberOfProgrammers = theMentorings.size();
        bonus = (int) (numberOfProgrammers * 0.05 * monthlySalary);
        return monthlySalary + bonus;and the toString method in the mentor class:
        int thesalary = 0;
        String thesalfin = null;
        String menteesdetails = "";
        //ConsoleIO.out.println("\nMentees: \t");
        Iterator mentees = theMentorings.iterator();
        while(mentees.hasNext() == true)
             Programmer mentee = (Programmer)mentees.next();             
            // increase the salary
            thesalary = thesalary + this.getMonthlySalary();
            menteesdetails = menteesdetails + "\n" + mentee.toString() + "\n\n";
        thesalfin = new Integer (thesalary).toString();
        return "<----------------------------------->\n" + super.toString() + "\n\n\tMentors Mentee's:\n<=>\n" + menteesdetails + "\n<=>\n<----------------------------------->\n\n"; //+ "\n\nThe MENTOR monthly salary: " + thesalfin + "\n";

Answer 1

i have done that but found where the problem is
when adding mentee and mentor method in Softwarehouse - if the programmer is NOT an instanceof Mentor - it creates the mentor object, removes programmer and adds the mentor object in the softwarehouse - if they obviously do java it increases the salary AGAIN by 10% - thats the problem it does it twice :(
     anotherage = mentorage;
     foundMentor = true;     
mentorname = prog.getName();
mentorproglang = prog.getCertainLang();
mentorpn = prog.getPayrollNumber();
mentorage = prog.getAge();
mentoryob = year - mentorage;
mentorsal = prog.getMonthlySalary();     
if(prog instanceof Mentor)
((Mentor)prog).addMentee(mentee);
else
createit = true;
mentorjavalang = prog.getCertainLang();
mentortemp = prog;
if(createit == true)
theStaff.remove(mentortemp);
Mentor mentormain = new Mentor(mentorname, mentorpn, mentorsal, mentoryob, mentorjavalang);               
theStaff.add(mentormain);
mentormain.addMentee(mentee);               
}