Java ConcurrentHashMap entrySet() Method

The entrySet() method of ConcurrentHashMap class returns a Set view of the mappings contained in this map. The changes made to the map are reflected in the set, and vice-versa.

Syntax

Parameter

No parameter is passed.

Returns

the set view

Throws

No exception is passed.

Example 1

import java.util.*;
import java.util.concurrent.ConcurrentHashMap;

public class ConcurrentHashMapentrySetExample1 {
   public static void main(String args[]) {
      
     ConcurrentHashMap<String , String>  mymap = new ConcurrentHashMap<String ,String>(); 

      mymap.put("AA", "Java");
      mymap.put("BB", "angular");
      mymap.put("CC", "JavaScript");

      Set myset = mymap.entrySet();
      System.out.println("myset values: " + myset);
   }    
}

Test it Now

Output:

myset values: [AA=Java, BB=angular, CC=JavaScript]

Example 2

import java.util.*;
import java.util.concurrent.ConcurrentHashMap;

public class ConcurrentHashMapentrySetExample2 {
   public static void main(String args[]) {
      
     ConcurrentHashMap<Integer , Integer>  mymap2 = new ConcurrentHashMap<Integer , Integer>(); 

      mymap2.put(1, 101);
      mymap2.put(2, 102);
      mymap2.put(3, 103);
      mymap2.put(4, 104);
      mymap2.put(5, 105);
      mymap2.put(6, 106);

      Set myset = mymap2.entrySet();
    
      System.out.println("  "+myset.toString());
       
   }
   }    

Test it Now

Output:

[1=101, 2=102, 3=103, 4=104, 5=105, 6=106]

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