Hamcrest Notes

Here are some notes on Hamcrest as I feel the urge.

Sample static imports:

  org.hamcrest.Matchers.equalTo;
  org.hamcrest.Matchers.nullValue;

JARs:

  hamcrest-all-1.3.ORC1.jar
  hamcrest-core-1.2.1-sources.jar
  hamcrest-library-1.3.RC2.jar --contains Matchers

Depending on how you intend to use Hamcrest, you should use different JARs.

hamcrest-core.jar
This is the core API to be used by third-party framework providers. This includes the a foundation set of Matcher implementations for common operations. This API is stable and will rarely change. You will need this library as a minimum.
hamcrest-library.jar
The ever-growing library of Matcher implementations. This will grow between releases.
hamcrest-generator.jar
A tool to allow many Matcher implementations to be combined into a single class so users don't have to remember many classes/packages to import. Generates code.
hamcrest-integration.jar
Provides integration between Hamcrest and other testing tools, including JUnit (3 and 4), TestNG, jMock and EasyMock.