| Package | Description | 
|---|---|
| checkers.basetype | Contains a simple typechecker plug-in that performs assignment and
 pseudo-assignment checks on annotated types. | 
| checkers.basic | |
| checkers.compilermsgs | |
| checkers.compilermsgs.quals | |
| checkers.fenum | |
| checkers.fenum.quals | |
| checkers.flow | Contains a generalized flow-sensitive qualifier inference that can be
 employed by any checker. | 
| checkers.i18n | |
| checkers.i18n.quals | |
| checkers.igj | Provides a typechecker plug-in for the IGJ  checkers.igj.qualsqualifiers that finds (and verifies the absence of) immutability errors. | 
| checkers.igj.quals | Contains qualifiers for type annotations used by the IGJ checker. | 
| checkers.interning | Provides a typechecker plug-in for the  Internedqualifier that finds (and verifies the absence of) equality-testing and
 interning errors. | 
| checkers.interning.quals | |
| checkers.javari | Provides a typechecker plug-in for the Javari type system that finds (and
 verifies the absence of) immutability errors. | 
| checkers.javari.quals | |
| checkers.linear | |
| checkers.linear.quals | |
| checkers.lock | |
| checkers.lock.quals | |
| checkers.nullness | Provides a typechecker plug-in for the  NonNullqualifier that finds (and verifies the absence of) null pointer errors. | 
| checkers.nullness.quals | |
| checkers.oigj | |
| checkers.oigj.quals | |
| checkers.propkey | |
| checkers.propkey.quals | |
| checkers.quals | Contains the basic annotations to be used by all type systems
 and meta-annotations to qualify annotations (qualifiers). | 
| checkers.regex | |
| checkers.regex.quals | |
| checkers.signature | |
| checkers.signature.quals | |
| checkers.source | Contains the essential functionality for interfacing a compile-time (source)
 typechecker plug-in to the Java compiler. | 
| checkers.tainting | |
| checkers.tainting.quals | |
| checkers.types | Contains a way of representing the type of a program element that considers
 the type qualifiers on that element (and ignores its Java type). | 
| checkers.types.visitors | |
| checkers.units | |
| checkers.units.quals | |
| checkers.util | |
| checkers.util.count | |
| checkers.util.debug | |
| checkers.util.report | |
| checkers.util.report.quals | |
| checkers.util.test | |
| checkers.util.trees |