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//import statement import java.util.concurrent.*; import java.util.*; public class ConcurrentHashMapcomputeIfAbsentExample1_1 { public static void main(String[] args) { // crete a HashMap and add some values HashMap<String, Integer> 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()); mapcon.computeIfAbsent("k5", k -> 200 + 300); mapcon.computeIfAbsent("k6", k -> 60 * 10); System.out.println("New HashMap after computeIfAbsent :\n "+ mapcon); } }
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