Online Java Compiler By
JavaTpoint.com
import java.util.*; import java.util.concurrent.*; public class ConcurrentHashMapmergeExample1 { public static void main(String[] args) { ConcurrentHashMap
conmap = new ConcurrentHashMap
(); conmap.put(1, "Java"); conmap.put(2, "php"); conmap.put(3, ".net"); conmap.put(5, "python"); ConcurrentHashMap
conmap2 = new ConcurrentHashMap
(); conmap2.put(1, "C"); conmap2.put(2, "C++"); conmap2.put(3, "Rubi"); conmap2.put(5, "Java Script"); conmap2.forEach( (key, value) -> conmap.merge( key, value, (v1, v2) -> v1.equalsIgnoreCase(v2) ? v1 : v1 + "," + v2) ); System.out.println(conmap); } }
Output