java.lang.Object
- java.lang.ClassLoader
- - org.springframework.core.DecoratingClassLoader
  - - org.springframework.instrument.classloading.ShadowingClassLoader

Direct Known Subclasses:
ResourceOverridingShadowingClassLoader
```
public class ShadowingClassLoader
extends DecoratingClassLoader
```
ClassLoader decorator that shadows an enclosing ClassLoader, applying registered transformers to all affected classes.
Since:
2.0
Author:
Rob Harrop, Juergen Hoeller, Costin Leau
See Also:
addTransformer(java.lang.instrument.ClassFileTransformer), OverridingClassLoader

Field Summary
Fields
Modifier and Type Field Description
static String[] DEFAULT_EXCLUDED_PACKAGES
Packages that are excluded by default.

Constructor Summary

Constructors
Constructor	Description
`ShadowingClassLoader(ClassLoader enclosingClassLoader)`	Create a new ShadowingClassLoader, decorating the given ClassLoader, applying `DEFAULT_EXCLUDED_PACKAGES`.
`ShadowingClassLoader(ClassLoader enclosingClassLoader, boolean defaultExcludes)`	Create a new ShadowingClassLoader, decorating the given ClassLoader.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addTransformer(ClassFileTransformer transformer)`	Add the given ClassFileTransformer to the list of transformers that this ClassLoader will apply.
`void`	`copyTransformers(ShadowingClassLoader other)`	Copy all ClassFileTransformers from the given ClassLoader to the list of transformers that this ClassLoader will apply.
`URL`	`getResource(String name)`
`InputStream`	`getResourceAsStream(String name)`
`Enumeration<URL>`	`getResources(String name)`
`protected boolean`	`isEligibleForShadowing(String className)`	Determine whether the specified class is eligible for shadowing by this class loader.
`Class<?>`	`loadClass(String name)`

Methods inherited from class org.springframework.core.DecoratingClassLoader
excludeClass, excludePackage, isExcluded

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

- Field Detail
  - DEFAULT_EXCLUDED_PACKAGES
```
public static final String[] DEFAULT_EXCLUDED_PACKAGES
```
    Packages that are excluded by default.
- Constructor Detail
  - ShadowingClassLoader
```
public ShadowingClassLoader(ClassLoader enclosingClassLoader)
```
    Create a new ShadowingClassLoader, decorating the given ClassLoader, applying DEFAULT_EXCLUDED_PACKAGES.
    Parameters:
    enclosingClassLoader - the ClassLoader to decorate
    See Also:
    ShadowingClassLoader(ClassLoader, boolean)
  - ShadowingClassLoader
```
public ShadowingClassLoader(ClassLoader enclosingClassLoader,
                            boolean defaultExcludes)
```
    Create a new ShadowingClassLoader, decorating the given ClassLoader.
    Parameters:
    enclosingClassLoader - the ClassLoader to decorate
    defaultExcludes - whether to apply DEFAULT_EXCLUDED_PACKAGES
    Since:
    4.3.8
- Method Detail
  - addTransformer
```
public void addTransformer(ClassFileTransformer transformer)
```
    Add the given ClassFileTransformer to the list of transformers that this ClassLoader will apply.
    Parameters:
    transformer - the ClassFileTransformer
  - copyTransformers
```
public void copyTransformers(ShadowingClassLoader other)
```
    Copy all ClassFileTransformers from the given ClassLoader to the list of transformers that this ClassLoader will apply.
    Parameters:
    other - the ClassLoader to copy from
  - loadClass
```
public Class<?> loadClass(String name)
                   throws ClassNotFoundException
```
    Overrides:
    loadClass in class ClassLoader
    Throws:
    ClassNotFoundException
  - isEligibleForShadowing
```
protected boolean isEligibleForShadowing(String className)
```
    Determine whether the specified class is eligible for shadowing by this class loader.
    Parameters:
    className - the class name to check
    Returns:
    whether the specified class is eligible
    See Also:
    DecoratingClassLoader.isExcluded(java.lang.String)
  - getResource
```
public URL getResource(String name)
```
    Overrides:
    getResource in class ClassLoader
  - getResourceAsStream
```
@Nullable
public InputStream getResourceAsStream(String name)
```
    Overrides:
    getResourceAsStream in class ClassLoader
  - getResources
```
public Enumeration<URL> getResources(String name)
                              throws IOException
```
    Overrides:
    getResources in class ClassLoader
    Throws:
    IOException

Class ShadowingClassLoader

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.springframework.core.DecoratingClassLoader

Methods inherited from class java.lang.ClassLoader

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_EXCLUDED_PACKAGES

Constructor Detail

ShadowingClassLoader

ShadowingClassLoader

Method Detail

addTransformer

copyTransformers

loadClass

isEligibleForShadowing

getResource

getResourceAsStream

getResources