Generating static class initializer using javapoet

Question

Is it possible to generate static initializer using javapoet? See an example of what I'm trying to generate below:

class Foo {
    static int one = 1;
    static int two = 2;
    static int sum;

    static {
        sum = one + two;
    }
}

I tried adding static initializer as a constructor with static modifier:

TypeSpec.classBuilder("Foo")
    .addField(FieldSpec.builder(int.class, "one", Modifier.STATIC).initializer("1").build())
    .addField(FieldSpec.builder(int.class, "two", Modifier.STATIC).initializer("2").build())
    .addField(int.class, "sum", Modifier.STATIC)
    .addMethod(MethodSpec.constructorBuilder()
        .addModifier(Modifier.STATIC)
        .addCode("sum = one + two;")
        .build())
    .build();

But this produces static Foo() { ... } instead of static {...}, which is incorrect syntax.

Is there a way to do it?

@t0mppa, may be vice versa - that question is duplicate of mine (see the dates) — Denis Itskovich, Dec 04 '18 at 06:24
Well, the other one has an answer that is up-to-date. This one has an answer that gives the wrong idea, since it was fixed a while after. I don't mind which way things go, but should be left with one main question that has an up-to-date answer. — t0mppa, Dec 05 '18 at 08:57

score 2 · Accepted Answer · answered Apr 23 '15 at 16:26

2

This cannot be done with version 1.0, the latest at time of writing.

However, there is a pull request to address this (https://github.com/square/javapoet/pull/257) which will hopefully be merged before the next release (most likely version 1.1).

answered Apr 23 '15 at 16:26

Jake Wharton

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Thanks for quick answer! – Denis Itskovich Apr 23 '15 at 16:28

Generating static class initializer using javapoet

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