ClassExtensions (jcommons-lang 4.34 API)

java.lang.Object
- de.alpharogroup.lang.ClassExtensions

```
public final class ClassExtensions
extends Object
```
The class ClassExtensions provides extension methods for the class Class.

Field Summary

Fields
Modifier and Type Field and Description

protected static String CGLIB_TAG
The Constant CGLIB_TAG contains the tag of a cglib class name.

Fields
Modifier and Type	Field and Description
`protected static String`	`CGLIB_TAG` The Constant CGLIB_TAG contains the tag of a cglib class name.

Constructor Summary

Constructors
Constructor and Description

ClassExtensions()

Constructors
Constructor and Description
`ClassExtensions()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`equalsByClassName(Class<?> oneClass, Class<?> otherClass)` Equal the given class objects by they qualified class names.
`static Class<?>`	`forName(String className)` Look up the class in the "current" ClassLoader.
`static Class<?>`	`getBaseClass(Class<?> childClass)` Gets the parent base class from the given child class.
`static String`	`getCallingMethodName(StackTraceElement[] elements)` Gets the calling method name.
`static Class<?>`	`getCglibProxy(Class<?> clazz)` Gets the real class if the given class is decorated with cglib proxy classes.
`static <T> Class<T>`	`getClass(T object)` Gets the `Class` of the given object.
`static ClassLoader`	`getClassLoader()` Gets the current class loader.
`static ClassLoader`	`getClassLoader(Object obj)` Gets the ClassLoader from the given object.
`static String`	`getClassname(Class<?> clazz)` Gets the classname from the given class.
`static String`	`getClassnameWithSuffix(Class<?> clazz)` Gets the classname and concats the suffix ".class" from the class.
`static String`	`getClassnameWithSuffix(Object obj)` Gets the classname and concats the suffix ".class" from the object.
`static de.alpharogroup.lang.ClassType`	`getClassType(Class<?> clazz)` Gets the `ClassType` from the given class.
`static String`	`getCurrentMethodName(StackTraceElement[] elements)` Gets the current method name.
`static List<File>`	`getDirectoriesFromResources(String path, boolean isPackage)` Gets the directories from the given path.
`static String`	`getJarPath(Class<?> clazz)` If the given class is in a JAR file than the jar path as String will be returned.
`static Class<?>[]`	`getJdkProxyInterfaces(Class<?> clazz)` Gets the jdk proxy interfaces.
`static String`	`getManifestUrl(Class<?> clazz)` If the given class is in a JAR, WAR or EAR file than the manifest url as String is returned.
`static String`	`getName(Class<?> clazz)` Returns the name of the given class or null if the given class is null.
`static String`	`getName(Class<?> clazz, boolean simple)` Returns the name of the given class or null if the given class is null.
`static String`	`getPath(Class<?> clazz)` Gets the path from the given class.
`static String`	`getPathFromObject(Object obj)` Finds the absolute path from the object.
`static URL`	`getResource(Class<?> clazz)` Gives the url from the path back.
`static URL`	`getResource(Class<?> clazz, String path)` Gives the url from the path back.
`static URL`	`getResource(String name)` Gives the URL from the resource.
`static <T> URL`	`getResource(String name, T obj)` Gives the URL from the resource.
`static File`	`getResourceAsFile(String name)` Gives the resource as a file Object.
`static File`	`getResourceAsFile(String name, Object obj)` Gives the resource as a file Object.
`static InputStream`	`getResourceAsStream(Class<?> clazz, String uri)` This method call the getResourceAsStream from the ClassLoader.
`static InputStream`	`getResourceAsStream(String name)` Gives the Inputstream from the resource.
`static InputStream`	`getResourceAsStream(String name, Object obj)` Gives the Inputstream from the resource.
`static List<URL>`	`getResources(String path)` Gets a list with urls from the given path for all resources.
`static String`	`getSimpleName(Class<?> clazz)` Returns the simple name of the given class or null if the given class is null.
`static Class<?>`	`getUnwrappedProxy(Class<?> clazz)` Gets the unwrapped proxy class.
`static URL`	`getURL(Class<?> clazz)` Returns the URL from the given class.
`static <T> boolean`	`isCglib(Class<T> clazz)` Checks if the given `Class` is cglib proxy class.
`static boolean`	`isCollection(Class<?> clazz)` Checks if the given class is assignable from `Collection`.
`static boolean`	`isDerivate(ClassLoader source, ClassLoader compare)` Compares the two given ClassLoader objects and returns true if compare is a derivate of source.
`static <T> boolean`	`isJdkProxy(Class<T> clazz)` Checks if the given `Class` is a JDK proxy class.
`static boolean`	`isMap(Class<?> clazz)` Checks if the given class is assignable from `Map`.
`static <T> boolean`	`isProxy(Class<T> clazz)` Checks if the given `Class` is a proxy class.
`static String`	`normalizeQualifiedClassName(String qualifiedClassname)` Normalizes the given full qualified class name.
`static String`	`normalizeSimpleClassName(String className)` Normalizes the given simple class name.
`static Set<Class<?>>`	`scanClassesFromPackage(File directory, String packagePath)` Scan for classes in the given directory.
`static Set<Class<?>>`	`scanClassesFromPackage(File directory, String packagePath, boolean recursive)` Scan recursive for classes in the given directory.
`static Set<Class<?>>`	`scanClassNames(String packageName)` Scan class names from the given package name.
`static Set<Class<?>>`	`scanClassNames(String packageName, boolean recursive)` Scan class names from the given package name.
`static Class<?>[]`	`unwrapProxy(Class<?> clazz)` Unwrap the given `Class` if it is wrapped from cglib or jdk proxies.

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

- Field Detail
  - CGLIB_TAG
```
protected static final String CGLIB_TAG
```
    The Constant CGLIB_TAG contains the tag of a cglib class name.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - ClassExtensions
```
public ClassExtensions()
```
- Method Detail
  - equalsByClassName
```
public static boolean equalsByClassName(Class<?> oneClass,
                                        Class<?> otherClass)
```
    Equal the given class objects by they qualified class names.
    
    Parameters:
    
    oneClass - one class for equation by the qualified class name.
    
    otherClass - the other class for equation by the qualified class name.
    
    Returns:
    
    s true if the qualified class names are equal otherwise false.
  - forName
```
public static Class<?> forName(String className)
                        throws ClassNotFoundException
```
    Look up the class in the "current" ClassLoader.
    
    Parameters:
    
    className - The class name to load
    
    Returns:
    
    the class
    
    Throws:
    
    ClassNotFoundException - is thrown if the Class was not found or could not be located.
  - getBaseClass
```
public static Class<?> getBaseClass(Class<?> childClass)
```
    Gets the parent base class from the given child class.
    
    Parameters:
    
    childClass - the child class
    
    Returns:
    
    the parent base class from the given child class.
  - getCallingMethodName
```
public static String getCallingMethodName(StackTraceElement[] elements)
```
    Gets the calling method name.
    
    Parameters:
    
    elements - the elements
    
    Returns:
    
    the calling method name
  - getCglibProxy
```
public static Class<?> getCglibProxy(Class<?> clazz)
```
    Gets the real class if the given class is decorated with cglib proxy classes.
    
    Parameters:
    
    clazz - the class
    
    Returns:
    
    the real class if the given class is decorated with cglib proxy classes and if not the given class will be returned.
  - getClass
```
public static <T> Class<T> getClass(T object)
```
    Gets the Class of the given object.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    object - the object to resolve the class
    
    Returns:
    
    the Class of the given object or null if the object is null.
  - getClassLoader
```
public static ClassLoader getClassLoader()
```
    Gets the current class loader.
    
    Returns:
    
    's the current class loader
  - getClassLoader
```
public static ClassLoader getClassLoader(Object obj)
```
    Gets the ClassLoader from the given object.
    
    Parameters:
    
    obj - The object.
    
    Returns:
    
    the ClassLoader from the given object.
  - getClassname
```
public static String getClassname(Class<?> clazz)
```
    Gets the classname from the given class.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    The classname.
  - getClassnameWithSuffix
```
public static String getClassnameWithSuffix(Class<?> clazz)
```
    Gets the classname and concats the suffix ".class" from the class.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    The classname and concats the suffix ".class".
  - getClassnameWithSuffix
```
public static String getClassnameWithSuffix(Object obj)
```
    Gets the classname and concats the suffix ".class" from the object.
    
    Parameters:
    
    obj - The object.
    
    Returns:
    
    The classname and concats the suffix ".class".
  - getClassType
```
public static de.alpharogroup.lang.ClassType getClassType(Class<?> clazz)
```
    Gets the ClassType from the given class.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    the ClassType from the given class.
  - getCurrentMethodName
```
public static String getCurrentMethodName(StackTraceElement[] elements)
```
    Gets the current method name.
    
    Parameters:
    
    elements - the elements
    
    Returns:
    
    the current method name
  - getDirectoriesFromResources
```
public static List<File> getDirectoriesFromResources(String path,
                                                     boolean isPackage)
                                              throws IOException,
                                                     URISyntaxException
```
    Gets the directories from the given path.
    
    Parameters:
    
    path - the path
    
    isPackage - If the Flag is true than the given path is a package.
    
    Returns:
    
    the directories from resources
    
    Throws:
    
    IOException - Signals that an I/O exception has occurred.
    
    URISyntaxException - is thrown if a string could not be parsed as a URI reference.
  - getJarPath
```
public static String getJarPath(Class<?> clazz)
```
    If the given class is in a JAR file than the jar path as String will be returned.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    the jar path as String if the given class is in a JAR file.
  - getJdkProxyInterfaces
```
public static Class<?>[] getJdkProxyInterfaces(Class<?> clazz)
```
    Gets the jdk proxy interfaces.
    
    Parameters:
    
    clazz - the class
    
    Returns:
    
    the jdk proxy interfaces
  - getManifestUrl
```
public static String getManifestUrl(Class<?> clazz)
```
    If the given class is in a JAR, WAR or EAR file than the manifest url as String is returned.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    the manifest url as String if the given class is in a JAR, WAR or EAR file.
  - getName
```
public static String getName(Class<?> clazz)
```
    Returns the name of the given class or null if the given class is null.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    The name of the given class.
  - getName
```
public static String getName(Class<?> clazz,
                             boolean simple)
```
    Returns the name of the given class or null if the given class is null. If the given flag 'simple' is true the simple name (without the package) will be returned.
    
    Parameters:
    
    clazz - The class
    
    simple - The flag if the simple name should be returned.
    
    Returns:
    
    The name of the given class or if the given flag 'simple' is true the simple name (without the package) will be returned.
  - getPath
```
public static String getPath(Class<?> clazz)
```
    Gets the path from the given class. For instance /java/lang/Object.class if the given class is from Object
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    the path from the given class.
  - getPathFromObject
```
public static String getPathFromObject(Object obj)
```
    Finds the absolute path from the object.
    
    Parameters:
    
    obj - The object.
    
    Returns:
    
    The absolute path from the object.
  - getResource
```
public static URL getResource(Class<?> clazz)
```
    Gives the url from the path back.
    
    Parameters:
    
    clazz - The class-object.
    
    Returns:
    
    's the url from the path.
  - getResource
```
public static URL getResource(Class<?> clazz,
                              String path)
```
    Gives the url from the path back.
    
    Parameters:
    
    clazz - The class-object.
    
    path - The path.
    
    Returns:
    
    's the url from the path.
  - getResource
```
public static URL getResource(String name)
```
    Gives the URL from the resource. Wrapes the Class.getResource(String)-method.
    
    Parameters:
    
    name - The name from the resource.
    
    Returns:
    
    The resource or null if the resource does not exists.
  - getResource
```
public static <T> URL getResource(String name,
                                  T obj)
```
    Gives the URL from the resource. Wrapes the Class.getResource(String)-method.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    name - The name from the resource.
    
    obj - The Object.
    
    Returns:
    
    The resource or null if the resource does not exists.
  - getResourceAsFile
```
public static File getResourceAsFile(String name)
                              throws URISyntaxException
```
    Gives the resource as a file Object.
    
    Parameters:
    
    name - The name from the file.
    
    Returns:
    
    The file or null if the file does not exists.
    
    Throws:
    
    URISyntaxException - occurs by creation of the file with an uri.
  - getResourceAsFile
```
public static File getResourceAsFile(String name,
                                     Object obj)
                              throws URISyntaxException
```
    Gives the resource as a file Object.
    
    Parameters:
    
    name - The name from the file.
    
    obj - The Object.
    
    Returns:
    
    The file or null if the file does not exists.
    
    Throws:
    
    URISyntaxException - occurs by creation of the file with an uri.
  - getResourceAsStream
```
public static InputStream getResourceAsStream(Class<?> clazz,
                                              String uri)
```
    This method call the getResourceAsStream from the ClassLoader. You can use this method to read files from jar-files.
    
    Parameters:
    
    clazz - the clazz
    
    uri - The uri as String.
    
    Returns:
    
    The InputStream from the uri.
  - getResourceAsStream
```
public static InputStream getResourceAsStream(String name)
```
    Gives the Inputstream from the resource. Wrapes the Class.getResourceAsStream(String)-method.
    
    Parameters:
    
    name - The name from the resource.
    
    Returns:
    
    The resource or null if the resource does not exists.
  - getResourceAsStream
```
public static InputStream getResourceAsStream(String name,
                                              Object obj)
```
    Gives the Inputstream from the resource. Wrapes the Class.getResourceAsStream(String)-method.
    
    Parameters:
    
    name - The name from the resource.
    
    obj - The Object.
    
    Returns:
    
    The resource or null if the resource does not exists.
  - getResources
```
public static List<URL> getResources(String path)
                              throws IOException
```
    Gets a list with urls from the given path for all resources.
    
    Parameters:
    
    path - The base path.
    
    Returns:
    
    The resources.
    
    Throws:
    
    IOException - Signals that an I/O exception has occurred.
  - getSimpleName
```
public static String getSimpleName(Class<?> clazz)
```
    Returns the simple name of the given class or null if the given class is null.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    The simple name of the given class.
  - getUnwrappedProxy
```
public static Class<?> getUnwrappedProxy(Class<?> clazz)
```
    Gets the unwrapped proxy class.
    
    Parameters:
    
    clazz - the class
    
    Returns:
    
    the unwrapped proxy class or null if the given Class is null.
  - getURL
```
public static URL getURL(Class<?> clazz)
```
    Returns the URL from the given class.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    the URL from the given class.
  - isCglib
```
public static <T> boolean isCglib(Class<T> clazz)
```
    Checks if the given Class is cglib proxy class.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    clazz - the class to check
    
    Returns:
    
    true, if the given Class is cglib proxy class otherwise false.
  - isCollection
```
public static boolean isCollection(Class<?> clazz)
```
    Checks if the given class is assignable from Collection.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    true, if the given class is assignable from Collection otherwise false.
  - isDerivate
```
public static boolean isDerivate(ClassLoader source,
                                 ClassLoader compare)
```
    Compares the two given ClassLoader objects and returns true if compare is a derivate of source.
    
    Parameters:
    
    source - the source
    
    compare - the compare
    
    Returns:
    
    true, if compare is a derivate of source.
  - isJdkProxy
```
public static <T> boolean isJdkProxy(Class<T> clazz)
```
    Checks if the given Class is a JDK proxy class.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    clazz - the class to check
    
    Returns:
    
    true, if the given Class is a JDK proxy class otherwise false.
  - isMap
```
public static boolean isMap(Class<?> clazz)
```
    Checks if the given class is assignable from Map.
    
    Parameters:
    
    clazz - The class.
    
    Returns:
    
    true, if the given class is assignable from Map otherwise false.
  - isProxy
```
public static <T> boolean isProxy(Class<T> clazz)
```
    Checks if the given Class is a proxy class.
    
    Type Parameters:
    
    T - the generic type
    
    Parameters:
    
    clazz - the class to check
    
    Returns:
    
    true, if the given Class is a proxy class otherwise false.
  - normalizeQualifiedClassName
```
public static String normalizeQualifiedClassName(String qualifiedClassname)
```
    Normalizes the given full qualified class name. This can be an entry from a jar file for instance.
    
    Parameters:
    
    qualifiedClassname - the full qualified class name to normalize.
    
    Returns:
    
    The normalized class name.
  - normalizeSimpleClassName
```
public static String normalizeSimpleClassName(String className)
```
    Normalizes the given simple class name.
    
    Parameters:
    
    className - the class name to normalize.
    
    Returns:
    
    The normalized class name.
  - scanClassesFromPackage
```
public static Set<Class<?>> scanClassesFromPackage(File directory,
                                                   String packagePath)
                                            throws ClassNotFoundException
```
    Scan for classes in the given directory.
    
    Parameters:
    
    directory - the directory
    
    packagePath - the package path
    
    Returns:
    
    the list
    
    Throws:
    
    ClassNotFoundException - occurs if a given class cannot be located by the specified class loader
  - scanClassesFromPackage
```
public static Set<Class<?>> scanClassesFromPackage(File directory,
                                                   String packagePath,
                                                   boolean recursive)
                                            throws ClassNotFoundException
```
    Scan recursive for classes in the given directory.
    
    Parameters:
    
    directory - the directory
    
    packagePath - the package path
    
    recursive - the recursive
    
    Returns:
    
    the list
    
    Throws:
    
    ClassNotFoundException - is thrown if a class in the given path cannot be located.
  - scanClassNames
```
public static Set<Class<?>> scanClassNames(String packageName)
                                    throws IOException,
                                           ClassNotFoundException
```
    Scan class names from the given package name.
    
    Parameters:
    
    packageName - the package name
    
    Returns:
    
    the Set with all class found in the given package name.
    
    Throws:
    
    IOException - Signals that an I/O exception has occurred.
    
    ClassNotFoundException - is thrown if a class in the given path cannot be located.
  - scanClassNames
```
public static Set<Class<?>> scanClassNames(String packageName,
                                           boolean recursive)
                                    throws IOException,
                                           ClassNotFoundException
```
    Scan class names from the given package name.
    
    Parameters:
    
    packageName - the package name
    
    recursive - the recursive flag
    
    Returns:
    
    the Set with all class found in the given package name.
    
    Throws:
    
    IOException - Signals that an I/O exception has occurred.
    
    ClassNotFoundException - is thrown if a class in the given path cannot be located.
  - unwrapProxy
```
public static Class<?>[] unwrapProxy(Class<?> clazz)
```
    Unwrap the given Class if it is wrapped from cglib or jdk proxies.
    
    Parameters:
    
    clazz - the class
    
    Returns:
    
    the unwrapped classes as an array

Class ClassExtensions

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

CGLIB_TAG

Constructor Detail

ClassExtensions

Method Detail

equalsByClassName

forName

getBaseClass

getCallingMethodName

getCglibProxy

getClass

getClassLoader

getClassLoader

getClassname

getClassnameWithSuffix

getClassnameWithSuffix

getClassType

getCurrentMethodName

getDirectoriesFromResources

getJarPath

getJdkProxyInterfaces

getManifestUrl

getName

getName

getPath

getPathFromObject

getResource

getResource

getResource

getResource

getResourceAsFile

getResourceAsFile

getResourceAsStream

getResourceAsStream

getResourceAsStream

getResources

getSimpleName

getUnwrappedProxy

getURL

isCglib

isCollection

isDerivate

isJdkProxy

isMap

isProxy

normalizeQualifiedClassName

normalizeSimpleClassName

scanClassesFromPackage

scanClassesFromPackage

scanClassNames

scanClassNames

unwrapProxy