Currently checkstyle does not support Java 8 syntax, so it fails when it encounters elements such as lambda functions. Support is claimed to be forthcoming in a few months. As a stopgap measure, in an upcoming pull request that makes use of Java 8 features, I have added a suppression filter that completely ignores certain files that would otherwise cause checkstyle to throw exceptions at runtime. This filter should be removed when a version of checkstyle is available that supports Java 8 syntax.
Currently checkstyle does not support Java 8 syntax, so it fails when it encounters elements such as lambda functions. Support is claimed to be forthcoming in a few months. As a stopgap measure, in an upcoming pull request that makes use of Java 8 features, I have added a suppression filter that completely ignores certain files that would otherwise cause checkstyle to throw exceptions at runtime. This filter should be removed when a version of checkstyle is available that supports Java 8 syntax.