Course.java~

import java.io.*;
import java.util.List;
import java.util.ArrayList;

class Course
{  
    private List <IndividualCourse> list;
    private String name, out;
 
  public Course() 
  {
   list = new ArrayList <IndividualCourse>();
  }
        
  
  //ADD COURSE AT THE END OF THE LIST
public void add(IndividualCourse k){
 
    list.add(k);//add course at the end of the list
}

    
  
  //CREATE NEW COURSE AT THE END OF THE LIST
public void createCourse(IndividualCourse k)  throws IOException
{ 
  PrintWriter newCourseFile = new PrintWriter(new FileWriter ("ListOfCourses.dat",true));
  
  newCourseFile.println(k.getCourseName());
  newCourseFile.close(); 
      //Creates folder with name of the course
 
      File temp = new File(k.getCourseName()); // Folder path
            if(!temp.exists()) {
                temp.mkdirs();
            } 
  //Create students file in course folder
   File f;
      f=new File(k.getCourseName() + "/students.txt");
      if(!f.exists()){
      f.createNewFile();
      
   }  //Add first entry
      PrintWriter courseFile = new PrintWriter(new FileWriter (k.getCourseName() + "/students.txt",true));
      courseFile.println("null");
      courseFile.close(); 
      
    list.add(k);//add course at the end of the list
}








   
//REMOVES COURSE OBJECT FROM THE LIST
public void deleteCourse(int index) throws IOException 
{   
       //Delete folder
    File dir = new File(list.get(index).getCourseName()); // Folder path
    deleteFolder(dir); //Delete folder of the course

    list.remove(index); //removes course object form the list
    
   //Put new array to the file
   PrintWriter delCourseFile = new PrintWriter(new FileWriter ("ListOfCourses.dat"));
     
  for(int j = 0; j < list.size(); j++)
    {
    delCourseFile.println(list.get(j).getCourseName());
    }  
 delCourseFile.close();      
}
            //START OF DELETE COURSE FOLDER
     public static boolean deleteFolder(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            for (int i=0; i<children.length; i++) {
                boolean success = deleteFolder(new File(dir, children[i]));
            }
        }
     return dir.delete();
    }
//end of DELETE_FOLDER


     
     
     
     
     
     
     
     
     
     
      //START OF EDIT COURSE
   public void editCourse(int nm, String cr) throws IOException  
   { 
        // Rename folder name
     File file = new File(list.get(nm).getCourseName());
     File file2 = new File(cr);  
    boolean success = file.renameTo(file2);
    if (!success) {
        
    }

   PrintWriter newCourseFile = new PrintWriter(new FileWriter ("ListOfCourses.dat"));
  
    for(int j = 0; j < list.size(); j++)
    {
      newCourseFile.println("");
    }    
  newCourseFile.close(); 
      
  list.get(nm).setCourseName(cr); //Edit element of array
  
  PrintWriter newCoursesFile = new PrintWriter(new FileWriter ("ListOfCourses.dat"));
     
  for(int j = 0; j < list.size(); j++)
    {
    newCoursesFile.println(list.get(j).getCourseName());
    }  
  newCoursesFile.close();      
   
   } //ENDOF  EDIT COURSE
    
     
     
     
   
   
//GETS SELECTED OBJECT FROM THE LIST
public IndividualCourse getCourseObject(int no) throws IOException {
  list.get(no).createStudentList();
return list.get(no);     
}


  
     
     
     

   
//SHOWS COURSES LIST
public void show(){
    for(int i=1; i<list.size();i++){
        Output.println("[" + i + "]" + list.get(i).getCourseName());
    }
}



}