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import java.util.concurrent.*; import java.util.*; public class ConcurrentHashMapreplaceExample2 { public static void main(String[] args) { // crete a HashMap and add some values HashMap
mapcon = new HashMap<>(); mapcon.put("k1", 100); mapcon.put("k2", 200); mapcon.put("k3", 300); mapcon.put("k4", 400); System.out.println("HashMap values :\n " + mapcon.toString()); //replace the value of key k2 to 2000 mapcon.replace("k2" , 200 , 2000); System.out.println("New HashMap after remove :\n "+ mapcon); } }
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