WebappClassLoader (Apache Tomcat 10.0.27 API Documentation)

java.lang.Object
- java.lang.ClassLoader
- - java.security.SecureClassLoader
  - - java.net.URLClassLoader
    - - org.apache.catalina.loader.WebappClassLoaderBase
      - org.apache.catalina.loader.WebappClassLoader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, Lifecycle, WebappProperties, InstrumentableClassLoader, PermissionCheck
```
public class WebappClassLoader
extends WebappClassLoaderBase
```

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.catalina.loader.WebappClassLoaderBase
  WebappClassLoaderBase.PrivilegedFindClassByName, WebappClassLoaderBase.PrivilegedGetClassLoader, WebappClassLoaderBase.PrivilegedJavaseGetResource
- Nested classes/interfaces inherited from interface org.apache.catalina.Lifecycle
  Lifecycle.SingleUse

Field Summary
- Fields inherited from class org.apache.catalina.loader.WebappClassLoaderBase
  delegate, loaderPC, parent, permissionList, resourceEntries, resources, securityManager, sm
- Fields inherited from interface org.apache.catalina.Lifecycle
  AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT

Constructor Summary

Constructors
Constructor Description

WebappClassLoader()

WebappClassLoader(java.lang.ClassLoader parent)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`WebappClassLoader`	`copyWithoutTransformers()`	Returns a copy of this class loader without any class file transformers.
`protected java.lang.Object`	`getClassLoadingLock(java.lang.String className)`	This class loader is not parallel capable so lock on the class loader rather than a per-class lock.

Methods inherited from class org.apache.catalina.loader.WebappClassLoaderBase
addLifecycleListener, addTransformer, addURL, check, checkStateForClassLoading, checkStateForResourceLoading, clearReferences, copyStateWithoutTransformers, destroy, doDefineClass, filter, findClass, findClassInternal, findLifecycleListeners, findLoadedClass0, findResource, findResources, getClearReferencesHttpClientKeepAliveThread, getClearReferencesLogFactoryRelease, getClearReferencesObjectStreamClassCaches, getClearReferencesRmiTargets, getClearReferencesStopThreads, getClearReferencesStopTimerThreads, getClearReferencesThreadLocals, getContextName, getDelegate, getHostName, getJavaseClassLoader, getPermissions, getResource, getResourceAsStream, getResources, getResources, getServiceName, getSkipMemoryLeakChecksOnJvmShutdown, getState, getStateName, getURLs, getWebappName, hasLoggingConfig, init, isPackageSealed, loadClass, loadClass, modified, refreshPolicy, removeLifecycleListener, removeTransformer, setClearReferencesHttpClientKeepAliveThread, setClearReferencesLogFactoryRelease, setClearReferencesObjectStreamClassCaches, setClearReferencesRmiTargets, setClearReferencesStopThreads, setClearReferencesStopTimerThreads, setClearReferencesThreadLocals, setDelegate, setJavaseClassLoader, setResources, setSkipMemoryLeakChecksOnJvmShutdown, start, stop, toString

Methods inherited from class java.net.URLClassLoader
close, definePackage, 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, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - WebappClassLoader
```
public WebappClassLoader()
```
  - WebappClassLoader
```
public WebappClassLoader(java.lang.ClassLoader parent)
```
- Method Detail
  - copyWithoutTransformers
```
public WebappClassLoader copyWithoutTransformers()
```
    Returns a copy of this class loader without any class file transformers. This is a tool often used by Java Persistence API providers to inspect entity classes in the absence of any instrumentation, something that can't be guaranteed within the context of a ClassFileTransformer's transform method.
    The returned class loader's resource cache will have been cleared so that classes already instrumented will not be retained or returned.
    
    Returns:
    
    the transformer-free copy of this class loader.
  - getClassLoadingLock
```
protected java.lang.Object getClassLoadingLock(java.lang.String className)
```
    This class loader is not parallel capable so lock on the class loader rather than a per-class lock.
    
    Overrides:
    
    getClassLoadingLock in class java.lang.ClassLoader