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  1. Groovy
  2. GROOVY-7185

Impossible to override method with generic array of Java class.

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 2.2.2, 2.3.8, 2.4.6
    • 2.4.8
    • Compiler
    • groovy 2.2.2 (tried with 2.3.8)
      java openjdk 1.7.0_65

      maven 3.2.2
      maven-compiler-plugin 3.1
      groovy-eclipse-compiler 2.8.0-01
      groovy-eclipse-batch 2.1.5-03

    Description

      Java classes:

      public interface A<T> {
    T[] process();
}

public class B implements A<String> {
    @Override
    public String[] process() {
        return new String[0];
    }
}

      Groovy class:

      class C extends B {
    @Override
    String[] process() {
        return super.process()
    }
}

      I've got following error during compilation:

      Groovy:The return type of [Ljava.lang.String; process() in temp.C is incompatible with [Ljava.lang.Object; process() in temp.B

      BTW, I can't convert classes A and B to Groovy because it's library's classes (not mine).

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        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. GROOVY-7849 Incompatible covariant array return type

          • Major - Major loss of function.
          • Closed

          Activity

            People

              shils Shil Sinha
              abeletsky Andrey Beletsky
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              Dates

                Created:
                Updated:
                Resolved: