Compilation error while upgrading from Guava 19 to 20

Question

Trying to upgrade guava from version 19 to 20 and getting this error:

Error:java: cannot access com.google.errorprone.annotations.CanIgnoreReturnValue
  class file for com.google.errorprone.annotations.CanIgnoreReturnValue not found

Any ideas how to fix it? I don't have any references to errorprone in my project. Adding dependency to errorprone like below doesn't help:

        <groupId>com.google.errorprone</groupId>
        <artifactId>error_prone_annotations</artifactId>

Guava 20 already has error_prone_annotations v2.0.12 dependency. The error_prone_annotations v2.0.12 has the CanIgnoreReturnValue annotation class. — notionquest, Nov 01 '16 at 17:01
"Guava 20 already has error_prone_annotations v2.0.12 dependency" - yes, but it "optional", not sure what it mean — valodzka, Nov 01 '16 at 17:30
I see the same issue when upgrading from Guava 19 -> 21 using Maven 3.3.9. I needed the dependency noted by @valodzka. — kevinarpe, Mar 30 '17 at 02:53

score 7 · Answer 1 · answered Nov 01 '16 at 17:35

7

Solved by adding errorprone dependency manually:

    <dependency>
        <groupId>com.google.errorprone</groupId>
        <artifactId>error_prone_annotations</artifactId>
        <version>2.0.12</version>
    </dependency>

answered Nov 01 '16 at 17:35

valodzka

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Compilation error while upgrading from Guava 19 to 20

1 Answers1