import javax.swing.*;
 class LibraryMain {
   //  Creates a staff of employees
   public static void main (String[] args)    {
   	 //  Sets up the list of books.
   	 Books[] BookList;
   	 BookList = new Books[5];
   	 BookList[0] = new Books("title", "author", "B1");
   	 BookList[1] = new Books("my", "by","B2");
   	 BookList[2] = new Books("lname", "by","B3");
              BookList[3] = new Books("lname", "by","B4");
              BookList[4] = new Books("lname", "by","B5");
 
  System.out.println("Library System\n");
  //creates object to print out details
	Borrowers personnel = new Borrowers();
    personnel.records();
     System.exit(0); //exits
   }
 
}
 
class Borrowers{
 
  public Students[] BorrowersList;
   public Borrowers ()   {
//  Sets up the list of borrowers.
BorrowersList = new Students[4];
BorrowersList[0] = new Students ("adam", "S1","", "");
BorrowersList[1] = new Students ("tim", "S2","B1", "");
BorrowersList[2] = new Students ("Mr", "L3","B5", "");
BorrowersList[3] = new Students ("mrs", "L4","B3", "B5");
 
 for(int count = 0;count<1;count++){ //loop to continue to enter books
 //gets student ID
 String num = JOptionPane.showInputDialog(null,
		     	   "Enter the ID number",
			       "Library System",
			        JOptionPane.QUESTION_MESSAGE);
 
        // gets bookid
         String num2 = JOptionPane.showInputDialog(null,
		    "Enter the Book ID",
			"Library System",
			 JOptionPane.QUESTION_MESSAGE);
			  //finds if any one has that book
			    for (int count2	=0; count <  4; count++)      {
         	if (BorrowersList[count2].bookid1.equals("num2")){
          			System.out.println("Book already on loan");
          				   break;
          						}
          		             else{
          				num = BorrowersList[count2].bookid1;
          				// problem here, wont override array??
          			    }
			       }
			    }
 
	 }
 
 public void records()   {
 	//prints out borrowers details
    for (int count=0; count < BorrowersList.length; count++)      {
         System.out.println (BorrowersList[count]);
         System.out.println ("-----------------------------------");
 
      }
   }
}
 
 class Students{
   protected String name;
   protected String ID;
   protected String bookid1;
   protected String bookid2;
 
   //  Sets up students with the information.
   public Students (String sName, String sID, String sBookid1, String sBookid2)   {
      name = sName;
      ID = sID;
      bookid1 = sBookid1;
      bookid2 = sBookid2;
 
   }
   //  Returns information about the students as a string.
   public String toString()   {
   	String result = "Name           : " + name + "\n";
           result += "ID            : " + ID + "\n";
           result += "Books borrowed: " +  bookid1 + bookid2 ;
 
 
      return result;
   }
 
}
 
class Books{
   protected String title;
   protected String author;
   protected String ISBN;
	  //  Sets up books with the information.
  public Books (String sName, String sID, String sBookid)   {
      title = sName;
      author = sID;
      ISBN = sBookid;
 
   }
 
}