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import java.util.concurrent.*; public class ConcurrentHashMapputIfAbsentExample1 { public static void main(String[] args) { ConcurrentHashMap
mapcon = new ConcurrentHashMap<>(); mapcon.put("alfabets", 26); mapcon.put("digits", 9); mapcon.put("vowels", 5); System.out.println("ConcurrentHashMap values : " + mapcon.toString()); mapcon.putIfAbsent("consonent", 21); System.out.println("new ConcurrentHashMap after putIfAbsent : "+ mapcon); } }
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