Flexible constructor bodies: Odd treatment of "return" in lambdas.

[Ella Ananeva]

Hi team,

For some reason, compiler rejects “return” in lambda if it’s declared in the early construction context. But a similar lambda without “return” is accepted. Is this by design?


interface Foo { int get(); }

class Test {
    Test() {
        Foo lmb = () -> 1; //is okay
        Foo lmb2 = () -> {
            return 1; //fails with a compilation error
        };
        super();
        Foo lmb3 = () -> {
            return 1; //is okay
        };
    }
}

public void main() {
    new Test();
}

Main.java:13: error: 'return' not allowed before explicit constructor invocation
            return 1;

java --version
openjdk 24-ea 2025-03-18
OpenJDK Runtime Environment (build 24-ea+24-2960)
OpenJDK 64-Bit Server VM (build 24-ea+24-2960, mixed mode, sharing)

Thank you,
Ella
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