Java 25 officially released

Post by Tostino » Wed, Sep 17, 2025, 2:16 AM UTC

p2detar wrote: post #97

Noe2097 wrote: post #90

Earlier quoted context omitted.

There has been a move in the past 8 years away from Java on the back end, notably to Go, by several large engineering organizations, which made the move, "motivated" by the example of companies like Google or by projects like Kubernetes, and seduced by the promises of a language simple to learn, build, and deploy.

> seduced by the promises of a language simple to learn, build, and deploy That's actually quite correct and I'm saying this as someone that does Java on daily basis. Go is in fact superior in terms of deployment. I would rather deploy a Go-written service than a Spring Boot one. That being said, I love using Java for monoliths - large code bases crammed with business logic. I personally don't see Go doing very well…

Post by samus » Wed, Sep 17, 2025, 3:07 AM UTC

MBCook wrote: post #143

samus wrote: post #79

Earlier quoted context omitted.

The move from javax to jakarta was not really connected to the changes in the language. It is very much recommended to not do these upgrades simultaneously.

Right. It was a copyright issue, I know. We didn’t do that one giant jump. We moved from 8 to 17 in one step, then in a separate step upgraded Tomcat requiring the jakarta changes later. I guess I tend to think of them as one “modernizing“ combo even though they’re not.

Post by mdaniel » Wed, Sep 17, 2025, 3:29 AM UTC

makapuf wrote: post #115

p2detar wrote: post #97

Earlier quoted context omitted.

> seduced by the promises of a language simple to learn, build, and deploy That's actually quite correct and I'm saying this as someone that does Java on daily basis. Go is in fact superior in terms of deployment. I would rather deploy a Go-written service than a Spring Boot one. That being said, I love using Java for monoliths - large code bases crammed with business logic. I personally don't see Go doing very well…

Why is it so ? Is go specifically lacking somewhere ?

Post by mdaniel » Wed, Sep 17, 2025, 3:44 AM UTC

thfuran wrote: post #122

AlienRobot wrote: post #114

Earlier quoted context omitted.

I've been trying Java recently with IntelliJ and it's been funny watching Java's evolution from the IDE's suggestions. In Java a lot of code looks like this void foo(Bar bar); where Bar is an interface, and in many cases it only has one single method, so it looks like a callback that must be wrapped inside a class. Fortunately, Java lets you create anonymous classes to use these methods. void foo(new Bar { @override…

Doesn't java now let you have both private methods in interfaces and default implementations of the interface methods?

    $ cat Foo.java
    interface Foo {
        private String jimbo() {
            return "yup";
        }
    }

    $ javap -c -private Foo
    Compiled from "Foo.java"
    interface Foo {
      private java.lang.String jimbo();
        Code:
           0: ldc           #1                  // String yup
           2: areturn
    }

    interface Bar {
      default boolean isAwesome() {
        return true;
      }
    }

Post by mdaniel » Wed, Sep 17, 2025, 3:59 AM UTC

lisbbb wrote: post #158

bootman wrote: post #5

Java has been such an amazingly solid technological foundation... and for a long, long time! It may not be the most sexy language but it's been a stable one. We have applications created with Java 1.4 running happily on Java 21 LTS and expect to upgrade to this latest LTS (Java 25) soon. Java for the win!

I disagree. That has not been my experience whatsoever. Every company I helped, and it's been dozens, had struggles moving to a new versions of the JVM. Every single time there were major issues that required a lot of re-work and re-testing. I bailed around Java 17 or 18, but it didn't matter because NOBODY I was working with was actually even using that version! On one particularly bad project in 2022, a client had…