Java Core

299 articles in this category.

Have you ever wondered what is the purpose of the "wait()", "notify()", "notifyAll()" methods that come with each Java object?

Optional is a mystery box, a wrapping paper: it may not contain value. When we specify that in a signature, we assume the box might be …

When a thread acquires a lock object, no other thread will be able to use it. Once a thread unlocks the lock, other threads acquire it …

We need to be very careful when using the "volatile" keyword, and we should use it only where it’s required, and definitely not everywhere.

Tip: We can only ask the Java thread to execute a piece of code, but we cannot guarantee the execution order of multiple threads!

Let's see an example of where we can use Threads. Let's assume we are building a web server that returns the most used words in a website.

To be able to execute a piece of code requires an execution environment. In Java, a thread is an executing environment.

Learn how using compact strings can help you reclaim 25% of Java heap memory and lower your Cloud bills... very easily.

Let's demystify the concepts behind memory management, taking a deeper look at memory management in some of the modern programming …

I aim to demystify the concepts behind memory management and take a look at memory management in some of the modern programming languages.