The best new features in Java 25

"Over the years, Java has consistently moved away from its verbose syntax and toward greater simplicity. A longstanding hurdle for Java beginners was the verbosity of defining even a simple "Hello World" program: public class HelloWorld { public static void main(String[] args) { System.out.println("Hello, InfoWorld!"); } } A beginner had to either ignore mysterious keywords like public, class, and static or learn about visibility, classes, and static members before ever touching on Java syntax basics."

"Java 25 addresses this issue with JEP 512: Compact source files and instance main methods, which lets us write the same program as: void main() { IO.println("Hello, World!"); } The most obvious thing to notice is that all the OOP syntax is gone. Of course, you can add this code back in as needed. But also notice the IO.println() call. The basic IO libraries were moved into the Java IO package, which is part of java.lang and does not require an explicit import."

JDK 25 simplifies Java syntax by introducing compact source files and instance main methods (JEP 512), enabling top-level main methods and removing boilerplate like public classes and static declarations. The Java IO package was moved into java.lang, allowing IO.println(...) without explicit imports. JEP 513 adds flexible constructor bodies so constructors no longer must call super() or this() first, increasing initialization flexibility. JDK 25 also includes performance and usability improvements and becomes the current long-term support (LTS) release, offering developers modern syntax, simplified entry points, and incremental enhancements to speed and developer experience.

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