package object_out;
import java.util.HashMap;
import java.lang.String;
import java.util.concurrent.ConcurrentHashMap;
public class TestPutIfAbsentForm3WithSyncBlock {
ConcurrentHashMap hm = new ConcurrentHashMap();
public String doPutIfAbsent() {
return hm.putIfAbsent("a_key", "a_value");
}
public String doPutIfAbsent2() {
return hm.putIfAbsent("a_key", "a_value");
}
}