PluginClassLoader (ImageJ API)

java.lang.Object
- java.lang.ClassLoader
- - java.security.SecureClassLoader
  - - java.net.URLClassLoader
    - - ij.io.PluginClassLoader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable
```
public class PluginClassLoader
extends java.net.URLClassLoader
```
ImageJ uses this class loader to load plugins and resources from the plugins directory and immediate subdirectories. This class loader will also load classes and resources from JAR files.
The class loader searches for classes and resources in the following order:
1. Plugins directory
2. Subdirectories of the Plugins directory
3. JAR and ZIP files in the plugins directory and subdirectories
The class loader does not recurse into subdirectories beyond the first level.

Field Summary

Fields
Modifier and Type Field Description

protected java.lang.String path

Constructor Summary

Constructors
Constructor	Description
`PluginClassLoader(java.lang.String path)`	Creates a new PluginClassLoader that searches in the directory path passed as a parameter.
`PluginClassLoader(java.lang.String path, boolean callSuper)`	This version of the constructor is used when ImageJ is launched using Java WebStart.

Method Summary
- Methods inherited from class java.net.URLClassLoader
  addURL, close, definePackage, findClass, findResource, findResources, getPermissions, getResourceAsStream, getURLs, newInstance, newInstance
- Methods inherited from class java.security.SecureClassLoader
  defineClass, defineClass
- Methods inherited from class java.lang.ClassLoader
  clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - path
```
protected java.lang.String path
```
- Constructor Detail
  - PluginClassLoader
```
public PluginClassLoader(java.lang.String path)
```
    Creates a new PluginClassLoader that searches in the directory path passed as a parameter. The constructor automatically finds all JAR and ZIP files in the path and first level of subdirectories. The JAR and ZIP files are stored in a Vector for future searches.
    
    Parameters:
    
    path - the path to the plugins directory.
  - PluginClassLoader
```
public PluginClassLoader(java.lang.String path,
                         boolean callSuper)
```
    This version of the constructor is used when ImageJ is launched using Java WebStart.