Package: org.codehaus.groovy.vmplugin.v9

## [Java] Class ClassFinder

- org.codehaus.groovy.vmplugin.v9.ClassFinder

-     public class ClassFinder
      extends Object

  Find classes under the specified package via some classpath entry Usage:

         // find classes under `me.sunlan` package via classpath entry(directory) `D:/_APPS/git_apps/java8-labs/out/production/classes/`
         ClassFinder.find(URI.create("file:/D:/_APPS/git_apps/java8-labs/out/production/classes/"), "me/sunlan")

         // find classes under `groovy.lang` package via classpath entry(jar file) `D:/_DEV/Groovy/groovy-3.0.1/lib/groovy-3.0.1.jar`
         ClassFinder.find(URI.create("file:/D:/_DEV/Groovy/groovy-3.0.1/lib/groovy-3.0.1.jar"), "groovy/lang")

         // find classes under `java.lang` package via classpath entry(jrt)
         ClassFinder.find(URI.create("jrt:/modules/java.base/"), "java/lang")

         // find classes under the sub-packages too, e.g. we can get GroovydocHolder via the following code
         ClassFinder.find(URI.create("file:/D:/_DEV/Groovy/groovy-3.0.1/lib/groovy-3.0.1.jar"), "groovy/lang", true)

  Since:
    3.0.2

- - ### Methods Summary

    Methods
    Type Params | Return Type | Name and description
    --- | --- | ---
    `` | `public static Map<String, Set<String>>` | `find(URI classpathEntryURI, String packageName)` Returns the found classes
    `` | `public static Map<String, Set<String>>` | `find(URI classpathEntryURI, String packageName, boolean recursive)` Returns the found classes
    `` | `public FileVisitResult` | `preVisitDirectory(Path path, BasicFileAttributes attrs)`
    `` | `public FileVisitResult` | `visitFile(Path path, BasicFileAttributes attrs)`

  - ### Inherited Methods Summary

    Inherited Methods
    Methods inherited from class | Name
    --- | ---
    `class Object` | `wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll`

- - ### Method Detail

    - #### public static Map<String, Set<String>> find(URI classpathEntryURI, String packageName)

      Returns the found classes

      Parameters:
        `classpathEntryURI` - the classpath entry
        `packageName` - the package under which we find classes
      Returns:
        the found classes
      Since:
        3.0.2

    - #### public static Map<String, Set<String>> find(URI classpathEntryURI, String packageName, boolean recursive)

      Returns the found classes

      Parameters:
        `classpathEntryURI` - the classpath entry
        `packageName` - the package under which we find classes
        `recursive` - whether to find sub-packages
      Returns:
        the found classes
      Since:
        3.0.2

    - #### @Override
      public FileVisitResult preVisitDirectory(Path path, BasicFileAttributes attrs)

    - #### @Override
      public FileVisitResult visitFile(Path path, BasicFileAttributes attrs)