There are various instances of this issue that we get such as JAVAC’, JRE, ‘MVN’, JAR’ is not recognized as an internal or external command, operable program or batch file, ‘Java’ is not recognized as ...

Learn about the best practices for concurrency in Java to ensure your multi-threaded applications are efficient, synchronized, and error-free. Concurrency in Java is the ability of multiple threads to ...

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) ...

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

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 ...

If an application is useful, then the network of users will grow crazily fast at some point. As more and more mission-critical applications are now running on Java EE, many Java developers are caring ...