Nov 11, 2021 · I am new to Java, and one thing confuse me is sometime commonly used APIs has very similar or same names. Like following, what are the differences between these two concurrentMap, …

Feb 4, 2009 · The ConcurrentMap is far more complicated in the implementation, we can refer to Building a better HashMap for details. In a nutshell, it's implemented taking both thread safe and …

Jul 2, 2015 · With Java 8, I am implementing a wrapper on java.util.concurrent.ConcurrentMap interface, particularly the remove (Object key) method. Since I need to do more checks during the remove, I …

What if a code-block contain both containsKey () and put () method? Should that be synchronized or not? @gaurav That should probably be synchonized. But instead of synchronize I would rather use …

May 14, 2010 · ConcurrentHashMap is a class it introduce in java 1.5 which implements the ConcurrentMap as well as the Serializable interface. ConcurrentHashMap is enhance the HashMap …

Jul 1, 2021 · 3 Interfaces Java bundles a pair of interfaces for a concurrent Map: ConcurrentMap ConcurrentNavigableMap The first makes thread-safety and atomicity guarantees. The second adds …

Mar 15, 2016 · If you have a ConcurrentMap, you can simply create a stream of its entries, by calling entrySet() and then stream() and keep the entries where the value has a length greater than 4 by …

Sep 1, 2020 · I would like to have possibilities like ConcurrentMap gives me so: thread-safe performance-efficient Id indicator as a key object in a value random-access to specific elements And …

Nov 3, 2015 · Before Java 8, things are more complicated. There, all ConcurrentMap offers, are certain atomic update methods which can be used to build more high-level update methods in a try-and …

Feb 13, 2017 · Tom's answer is correct as far as API usage goes for ConcurrentMap. An alternative that avoids using putIfAbsent is to use the computing map from the GoogleCollections/Guava MapMaker …