Properties Set> entrySet() method Example Program

Returns a Set view of the mappings contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation, or through the setValue operation on a map entry returned by the iterator) the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll and clear operations. It does not support the add or addAll operations.

Program

package com.candidjava;
import java.util.Hashtable;
import java.util.Properties;
import java.util.Set;

/* 
 * @author : Mohan 
 * @description : The entrySet() method is used to get a set view of the entries contained in this Hashtable.Remember, each element in this collection is a Map.Entry.
 */
public class PropertiesEntrySet {

	public static void main(String[] args) {
		Properties properties = new Properties();
		Hashtable ht = new Hashtable(properties);
		ht.put("1", "hari");
		ht.put("2", "anand");
		ht.put("3", "vinoth");
		ht.put("4", "mohan");
		ht.put("5", "karthick");
		System.out.println(ht);
		Set nset = ht.entrySet();
		System.out.println(nset);
	}

}

Output

Explanation

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