Check if a particular value exists in Java Hashtable

     

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");

    boolean blnExists = ht.contains("Two");
    System.out.println("Two exists in Hashtable ? : " + blnExists);
  }
}

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Check if a particular value exists in Java Hashtable : HashTable Map « Collections Data Structure « Java

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