tema 23

import java.util.*;

public class dictionery {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String command="";

        Dictionary geek = new Hashtable();

        while (!command.equals("end")) {
            command = scan.nextLine().toLowerCase();
            if (command.equals("add")) {
                System.out.println("Enter student number:");
               String number = scan.nextLine().toLowerCase();
                System.out.println("Enter student name:");
                String name = scan.nextLine().toLowerCase();
                geek.put(number,name );

            }else if(command.equals("rem")){
                System.out.println("Enter student number to remove:");
                String remove = scan.nextLine().toLowerCase();
                geek.remove(remove);
            }else if(command.equals("cnt")){
                System.out.println("\nSize of Dictionary : " + geek.size());
            }else if(command.equals("prn")){
                for (Enumeration i = geek.elements(); i.hasMoreElements();)
                {
                    System.out.println("Value in Dictionary : " + i.nextElement());
                }
            }
        }

    }
}