Replace System.out.print(ln) with IO.print(ln)

[tfeuerba]

What problem are you trying to solve?

JEP 512, JDK-8305457 added a new IO class to JDK 25 that is automatically imported (as it is part of java.lang). It offers convenient methods to read and write from standard input and output. While aimed at beginners, it is a concise way to print to the console, and will feel natural to anyone who started their Java journey at version 25.

What precondition(s) should be checked before applying this recipe?

JDK version >= 25

Describe the situation before applying the recipe

class A {
    static void main() {
        System.out.print("Please enter your name: ");
        String name = IO.readln();
        System.out.println("Hello " + name);
    }
}

Describe the situation after applying the recipe

class A {
    static void main() {
        IO.print("Please enter your name: ");
        String name = IO.readln();
        IO.println("Hello " + name);
    }
}

Any additional context

Note that IO does not offer a way to print formatted strings, so System.out.printf will remain unchanged.

[timtebeek]

Yes makes sense, thanks! Would you want to get involved with writing that one?

[e5LA]

I’ve opened #848 with proposed solution. Happy to iterate on feedback.

[tfeuerba]

Sorry for not replying earlier and thanks to @e5LA for picking this up so quickly. PR looks good to me