error-prone

by google

google / error-prone

Catch common Java mistakes as compile-time errors

5.4K Stars 581 Forks Last release: 5 months ago (v2.4.0) Apache License 2.0 4.5K Commits 33 Releases

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Error Prone

Error Prone is a static analysis tool for Java that catches common programming mistakes at compile-time.

public class ShortSet {
  public static void main (String[] args) {
    Set s = new HashSet<>();
    for (short i = 0; i < 100; i++) {
      s.add(i);
      s.remove(i - 1);
    }
    System.out.println(s.size());
  }
}
error: [CollectionIncompatibleType] Argument 'i - 1' should not be passed to this method;
its type int is not compatible with its collection's type argument Short
      s.remove(i - 1);
              ^
    (see https://errorprone.info/bugpattern/CollectionIncompatibleType)
1 error

Getting Started

Our documentation is at errorprone.info.

Error Prone works with Bazel, Maven, Ant, and Gradle. See our installation instructions for details.

Developing Error Prone

Developing and building Error Prone is documented on the wiki.

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