Hashtable: keys() : Hashtable « java.util « Java by API

1. Java by API
2. java.util
3. Hashtable

Hashtable: keys()

  
/*
 * Output: 
key = apple; value = red
key = strawberry; value = red
 */

import java.util.Enumeration;
import java.util.Hashtable;

public class MainClass {

  public static void main(String args[]) {
    Hashtable hashtable = new Hashtable();
    hashtable.put("apple", "red");
    hashtable.put("strawberry", "red");

    Enumeration e = hashtable.keys();
    while(e.hasMoreElements()) {
      Object k = e.nextElement();
      Object v = hashtable.get(k);
      System.out.println("key = " + k + "; value = " + v);
    } 

  }
}
    
           
         
    
  

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