google / error-prone

Catch common Java mistakes as compile-time errors

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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.remove(i - 1);
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);
1 error

Getting Started

Our documentation is at

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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Catch common Java mistakes as compile-time errors

License:Apache License 2.0


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