Question

This is a small part of my code. My project is to simulate a whole school system. To add teachers, courses etc. All of my class members are private, so i created setters and getters methods. I try to give to ‘teachersNum’ a value and this must be automatic(not from keyboard). So i want to give it value 1 if its the first teacher etc. I hope you can understand. Sorry for my English.

public void addTeachersList(Teachers teachers) {
   if(this.teachersSize<100){
     this.teachersList[this.teachersSize] = teachers;
     this.teachersList[this.teachersSize].getTeacherNum() = this.teachersSize -1;
     this.teachersSize++;
   }
} 

Answer 1

You’ll have to call a setter:

this.teachersList[this.teachersSize].setTeacherNum(this.teachersSize-1);

Calling the getter getTeacherNum just gives you the number, it isn’t a reference to that property.

Although I must say, you’d really do yourself a favor by using a List implementation instead of arrays.