hashtable search help.

hey

i've been creating a hashtable for storing data on student names and exam marks. i'm trying to set up a couple of searches but i'm not sure i'm going along the right lines.
if anyone can give me a heads up on anything i need to change and also a good search technique it would be greatly appreciated.

Code:

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import java.io.*;
import java.util.*;

        class HashTable {
               
                private Hashtable record;
                private BufferedReader input;
                private String name, mark;
               
  public static void main(String[] args)throws IOException  {
    HashTable myHash = new HashTable();

  }

  public HashTable()throws IOException{

    input = new BufferedReader( new InputStreamReader(System.in));
    record = new Hashtable();
 
    readItems();
    displayTable();
  }

  public void readItems() throws IOException{
         
      System.out.println("Enter Student Names and Marks. \n  Enter Student Name, to finish type 'end': \n") ;
      name = input.readLine() ;
      System.out.println("Enter Student Exam Mark, to finish type 'end': \n") ;
      mark = input.readLine() ;
      while ( !name.equals("end")) {
                record.put(name, name);
            record.put(name, mark);
        System.out.println("Enter Student Name, to finish type 'end': \n") ;
        name = input.readLine() ;
        System.out.println("Enter Student Exam Mark, to finish type 'end': \n") ;
        mark = input.readLine() ;
        }
      }
     

  public void displayTable() throws IOException{
    System.out.println("The Names and Marks are :  ");
    Enumeration enumName = record.keys();
    Enumeration enumMark = record.elements();
    while ( enumName.hasMoreElements() )
      System.out.println(enumName.nextElement()+ "  " + enumMark.nextElement());
      System.out.println();
     
      System.out.println("Enter Student Name to Search for Mark :  \n");
      name = input.readLine();
      System.out.println("The Students Mark is :  \n" + record.get(name) + "\n");
     

  }
 

}

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i know some of the indentation is wrong but i'm more concerned about the understanding.

thanks in advance.