Iterate through keys of Java Hashtable

     

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

public class Main {
  public static void main(String[] args) {
    Hashtable<String, String> ht = new Hashtable<String, String>();

    ht.put("1", "One");
    ht.put("2", "Two");
    ht.put("3", "Three");

    Enumeration e = ht.keys();

    while (e.hasMoreElements()){
      System.out.println(e.nextElement());
    }
  }
}

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Iterate through keys of Java Hashtable : HashTable Map « Collections Data Structure « Java

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