Top 10 ConcurrentHashMap Questions from Java Interviews

Top 10 ConcurrentHashMap Questions from Java Interviews

The ConcurrentHashMap class part of concurrent collections package added on JDK 1.5 which contains utility classes likeBlockingQueue, CopyOnWriteArra…
How to Create a thread-safe ConcurrentHashSet in Java 8? Example

How to Create a thread-safe ConcurrentHashSet in Java 8? Example

Until JDK 8, there was no way to create a large, thread-safe, ConcurrentHashSet in Java. The java.util.concurrent package doesn't even have a cla…
How to Remove a Key, Value, or Entry from an HashMap in Java 8 - Example Tutorial

How to Remove a Key, Value, or Entry from an HashMap in Java 8 - Example Tutorial

In the last article, I have shown how to remove key/value pairs from a map in Java based upon some conditions like remove all entries where values ar…
Java HashMap ContainsKey and ContainsValue Example - Check if a Key or Value exists in the Map

Java HashMap ContainsKey and ContainsValue Example - Check if a Key or Value exists in the Map

Hello guys, one of the common problems many Java developers working with HashMap face is about how to check if the Map contains a particular key or v…