Package jodd.util

Class ClassLoaderUtil

java.lang.Object

jodd.util.ClassLoaderUtil

public class ClassLoaderUtil
extends Object

Utilities to manipulate class path, define and find classes etc.

Field Summary

Fields

Modifier and Type	Field	Description
static ClassLoaderStrategy	classLoaderStrategy
private static final String[]	MANIFESTS

Constructor Summary

Constructors

Constructor	Description
ClassLoaderUtil()

Method Summary

Modifier and Type	Method	Description
static String	classLocation(Class clazz)	Returns location of the class.
static InputStream	getClassAsStream(Class clazz)	Opens a class of the specified name for reading using class classloader.
static InputStream	getClassAsStream(String className)	Opens a class of the specified name for reading.
static InputStream	getClassAsStream(String className, ClassLoader classLoader)	Opens a class of the specified name for reading using provided class loader.
static String	getClasspathItemBaseDir(File classpathItem)	Returns base folder for classpath item.
static Manifest	getClasspathItemManifest(File classpathItem)	Returns classpath item manifest or null if not found.
static ClassLoader	getContextClassLoader()	Returns thread context class loader.
static ClassLoader	getDefaultClassLoader()	Returns default class loader.
static ClassLoader	getSystemClassLoader()	Returns system class loader.
static Class	loadClass(String className)	Loads a class using default class loader strategy.
static Class	loadClass(String className, ClassLoader classLoader)	Loads a class using default class loader strategy.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

classLoaderStrategy

public static ClassLoaderStrategy classLoaderStrategy

MANIFESTS

private static final String[] MANIFESTS

Constructor Details

ClassLoaderUtil

public ClassLoaderUtil()

Method Details

getDefaultClassLoader

public static ClassLoader getDefaultClassLoader()

Returns default class loader. By default, it is threads context class loader. If this one is null, then class loader of the caller class is returned.

getContextClassLoader

public static ClassLoader getContextClassLoader()

Returns thread context class loader.

getSystemClassLoader

public static ClassLoader getSystemClassLoader()

Returns system class loader.

getClasspathItemManifest

public static Manifest getClasspathItemManifest(File classpathItem)

Returns classpath item manifest or null if not found.

getClasspathItemBaseDir

public static String getClasspathItemBaseDir(File classpathItem)

Returns base folder for classpath item. If item is a (jar) file, its parent is returned. If item is a directory, its name is returned.

getClassAsStream

public static InputStream getClassAsStream(Class clazz)
                                    throws IOException

Opens a class of the specified name for reading using class classloader.

Throws:

IOException

getClassAsStream

public static InputStream getClassAsStream(String className)
                                    throws IOException

Opens a class of the specified name for reading. No specific classloader is used for loading class.

Throws:

IOException

getClassAsStream

public static InputStream getClassAsStream(String className,
 ClassLoader classLoader)
                                    throws IOException

Opens a class of the specified name for reading using provided class loader.

Throws:

IOException

loadClass

public static Class loadClass(String className)
                       throws ClassNotFoundException

Loads a class using default class loader strategy.

Throws:

ClassNotFoundException

See Also:

• ClassLoaderStrategy.DefaultClassLoaderStrategy

loadClass

public static Class loadClass(String className,
 ClassLoader classLoader)
                       throws ClassNotFoundException

Loads a class using default class loader strategy.

Throws:

ClassNotFoundException

See Also:

• ClassLoaderStrategy.DefaultClassLoaderStrategy

classLocation

public static String classLocation(Class clazz)

Returns location of the class. If class is not in a jar, it's classpath is returned; otherwise the jar location.