Java.lang exceptions are some of the most commonly encountered exceptions in Java programming. As one of the foundational packages in the Java Standard Library, you don't even explicitly import java.lang in your code; it’s automatically imported into every Java program. Thanks to java.lang you get essential classes such as String, Math, and System, among others. You also get a variety of base classes for handling exceptions and errors.

The java.lang.IndexOutOfBoundsException in Java is thrown when an index used in arrays, lists, or strings is not valid. A valid index must be a number from 0 up to one less than the total number of items. For example, in a list of 3 items, the valid indices are 0, 1, and 2. Here’s a quick example: The error message you’d get would look something like this: Here are some other common ways the IndexOutOfBoundsException might be thrown.

The "Unsupported class file major version 61" error in Java means you're trying to run a Java program that's too advanced for the version of Java you have installed. To fix this, either update your Java to version 17 or newer, otherwise recompile the program with an older Java version that matches your runtime environment.

The Java error “Could not find or load main class” is thrown when the JVM fails to find or load the main class while executing a program. This is often due to simple mistakes like typing the wrong class name or having the class file in the wrong place. It usually occurs when executing a Java program from the command line. Install the Rollbar Java SDK to identify and fix these errors.

Have you ever wondered how computer programs manage their memory, like how they clean up after themselves to keep things running smoothly? what happens to all those blocks you are no longer using? This is where the role of the garbage collector becomes significant. Think of the garbage collector as a diligent assistant that recognizes tools you have finished using. It proceeds to carefully place these tools back into their storage, effectively reclaiming memory.

JVM uses threads to execute every single operation. And during its lifetime, these threads can go through various stages. One such stage, where the threads are unable to move any further or are blocked from operating is called as the thread-waiting situation. There are various scenarios in which a thread can enter a waiting state. Identifying and diagnosing thread-waiting situations is important for maintaining the performance and reliability of multithreaded applications.

Are you in a dilemma about how to go ahead with your next project? Have questions related to which one is better if we compare Node.js vs Java and the major difference between the two. To bring to your notice, two prominent languages have emerged as popular choices for building robust and scalable applications: Node.js and Java.