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/* Check if a particular value exists in Java Hashtable example This Java Example shows how to check if Hashtable object contains a particular value using contains method of Hashtable class. */ import java.util.Hashtable; public class CheckValueOfHashtableExample { public static void main(String[] args) { //create Hashtable object Hashtable ht = new Hashtable(); //add key value pairs to Hashtable ht.put("1","One"); ht.put("2","Two"); ht.put("3","Three"); /* To check whether a particular value exists in Hashtable use boolean contains(Object key) method of Hashtable class. It returns true if the value is mapped to one or more keys in the Hashtable otherwise false. */ boolean blnExists = ht.contains("Two"); System.out.println("Two exists in Hashtable ? : " + blnExists); } } /* Output would be Two exists in Hashtable ? : true */ |
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