Unnamed Classes with Initializers

[Wesley Egberto]

Hi all

First off, please let me know if I have sent this to the wrong group.

I'm exploring the JEPs in JDK 21, with the JEP 445 Unnamed Classes and
Instance Main Methods I'm getting a compiler error when using instance and
static initializers.

I would like to know if I misunderstood the JEP or if I'm missing something.

The JEP says:

"An unnamed class is almost exactly like an explicitly declared class. Its
> members can have the same modifiers (e.g., private and static) and the
> modifiers have the same defaults (e.g., package access and instance
> membership). *The class can have static initializers as well as instance
> initializers.* One key difference is that while an unnamed class has a
> default zero-parameter constructor, it can have no other constructor."


When I try to compile the following code:

static {
    System.out.println("static initializer");
}

{
    System.out.println("instance initializer");
}

void main() {
    System.out.println("instance main method");
}

I got the following error:

UnnamedClassWithInitializers.java:1: error: class, interface, enum, or
record expected
static {
       ^
UnnamedClassWithInitializers.java:3: error: class, interface, enum, or
record expected
}
^
UnnamedClassWithInitializers.java:7: error: class, interface, enum, or
record expected
}
^
UnnamedClassWithInitializers.java:11: error: class, interface, enum, or
record expected
}
^
4 errors
error: compilation failed

Thank you for your time and work!

Wesley Egberto
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