After compiling the source code (javac City.java) and running the application (java City), you would observe null for name and 0 for population. The new operator zeroes an object’s object ...

OOP can seem a bit abstract at first, but once you get the hang of it, it’ll change the way you write code. It’s all about ...

Although Java lacks a true sizeof () equivalent, the Instrumentation interface introduced with J2SE5 can be used to get an estimate of the size of a particular object via its getObjectSize (Object ...

What is the purpose of a Java compiler? The main purpose of a Java compiler (or a compiler in any programming language) is to translate the high-level Java source code into a machine code file ...

Java currently supports only primitive types and object references. Project Valhalla extends this by introducing inline classes which are new types that exhibit some behaviors of both types of value.

This approach, called "object monitor tables", was implemented in JDK 22 and is activated by a new switch UseObjectMonitorTable that is on by default. Compact object headers rely upon this mechanism.

The 30th anniversary of Java, being celebrated this year, offers a perfect opportunity to reflect on the remarkable changes the ecosystem has undergone.

The Java Function interface is quite simple. It takes a single Java object as an argument, and returns a single Java object when the method concludes. Any method you can conjure up takes an object and ...

Java is a programming language developed by James Gosling at Sun Microsystems. The general-purpose, object-oriented language is designed to be written once; the code can be run on practically any ...

BlueJ is an innovative Java IDE that offers other unique features that many others lack, such as scope coloring, code pads, and object benches. Best of all, it is fully portable!