Java.util.Dictionary.isEmpty() Method


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Description

The java.util.Dictionary.isEmpty() method check if this dictionary has no keys to value.

Declaration

Following is the declaration for java.util.Dictionary.isEmpty() method

public abstract boolean isEmpty()

Parameters

  • NA

Return Value

This method returns true if this dictionary has no keys to values; false otherwise.

Exception

  • NA

Example

The following example shows the usage of java.util.Dictionary.isEmpty() method.

package com.tutorialspoint;

import java.util.*;

public class DictionaryDemo {

   public static void main(String[] args) {
	 
   // create a new hashtable
   Dictionary d = new Hashtable();
	 
   // add elements in the hashtable
   d.put("1", "Chocolate");
   d.put("2", "Cocoa");
   d.put("5", "Coffee");
	  
   // return true if this dictionary maps no keys to value.
   boolean b = d.isEmpty();
   System.out.println("Dictionary is empty:" + b);
   }
}

Let us compile and run the above program, this will produce the following result:

Dictionary is empty:false

java_util_dictionary.htm

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