TheServerSide

HashMap vs. Hashtable: Which map should you choose?

While the Hashtable was part of the initial Java release over two decades ago, the HashMap is the correct key-value store to use today. One key HashMap vs. Hashtable difference is the fact that the ...
Game Rant

Fortnite Has Broken Its Own Concurrent Player Record

Raul is a freelance writer with four years of writing and editing experience in games journalism. Currently, he is a News Writer at Game Rant and the Managing Editor of Final Weapon, a Japanese gaming ...
GitHub

NullPointerException at ConcurrentHashMap.get

java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Object.hashCode ()' on a null object reference at j$.util.concurrent.ConcurrentHashMap.get (ConcurrentHashMap.java:0) ...
GitHub

java.lang.NullPointerException in ReflectionDataBuilder

Fatal error: java.lang.NullPointerException at java.base/java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011) at java.base/java.util.concurrent ...
InfoWorld

Cannot Assume Serializability for Java Map’s Nested Classes

A colleague of mine recently ran into an issue that I have not run into myself, but found to be interesting and, in my opinion, worth blogging about here. During some distributed Java development, my ...
InfoQ

Profiling java.util.concurrent locks

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Dany Lepage discusses the architectural ...