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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<Short> 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 http://errorprone.info/bugpattern/CollectionIncompatibleType)
1 error

Getting Started

Our documentation is at errorprone.info.

Error Prone works with Bazel, [Maven] (http://maven.apache.org), Ant, and [Gradle] (http://gradle.org). See our [installation instructions] (http://errorprone.info/docs/installation) for details.

Developing Error Prone

Developing and building Error Prone is documented on the [wiki] (https://github.com/google/error-prone/wiki/For-Developers).

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Catch common Java mistakes as compile-time errors

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