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checker

The Checker Framework enhances Java’s type system to make it more powerful and useful. This lets software developers detect and prevent errors in their Java programs. The Checker Framework includes compiler plug-ins ("checkers") that find bugs or verify their absence. It also permits you to write your own compiler plug-ins.
http://checkerframework.org
GNU General Public License, version 2 (GPL2), with the classpath exception
Michael Ernst Werner M. Dietl Suzanne Millstein David McArthur David McArthur Dan Brown Jonathan G. Burke
verify includes type software errors more bugs checkers write useful find programs detect absence your prevent powerful framework developers checker enhances that system plug compiler java permits their make this lets also
Files download
File Operation
checker-1.9.4.jar download
checker-1.9.4.pom download
checker-1.9.4-sources.jar download
Apache Maven 
<dependency>
  <groupId>org.checkerframework</groupId>
  <artifactId>checker</artifactId>
  <version>1.9.4</version>
</dependency>
Gradle Groovy 
implementation 'org.checkerframework:checker:1.9.4'
Gradle Kotlin 
implementation("org.checkerframework:checker:1.9.4")
Scala SBT 
libraryDependencies += "org.checkerframework" % "checker" % "1.9.4"
Groovy Grape 
@Grapes(
  @Grab(group='org.checkerframework', module='checker', version='1.9.4')
)
Apache Ivy 
<dependency org="org.checkerframework" name="checker" rev="1.9.4" />
Leiningen 
[org.checkerframework/checker "1.9.4"]
Apache Buildr 
'org.checkerframework:checker:jar:1.9.4'
Dependencies
The project has no third-party dependencies