jodd.util

Class ClassLoaderUtil

java.lang.Object

jodd.util.ClassLoaderUtil

public class ClassLoaderUtil
extends java.lang.Object

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

Constructor Summary

Constructors

Constructor and Description
ClassLoaderUtil()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	classLocation(java.lang.Class clazz) Returns location of the class.
static java.io.InputStream	getClassAsStream(java.lang.Class clazz) Opens a class of the specified name for reading using class classloader.
static java.io.InputStream	getClassAsStream(java.lang.String className) Opens a class of the specified name for reading.
static java.io.InputStream	getClassAsStream(java.lang.String className, java.lang.ClassLoader classLoader) Opens a class of the specified name for reading using provided class loader.
static java.lang.String	getClasspathItemBaseDir(java.io.File classpathItem) Returns base folder for classpath item.
static java.util.jar.Manifest	getClasspathItemManifest(java.io.File classpathItem) Returns classpath item manifest or null if not found.
static java.lang.ClassLoader	getContextClassLoader() Returns thread context class loader.
static java.lang.ClassLoader	getDefaultClassLoader() Returns default class loader.
static java.io.File[]	getDefaultClasspath() Returns default classpath using default classloader.
static java.io.File[]	getDefaultClasspath(java.lang.ClassLoader classLoader) Returns default class path from all available URLClassLoader in classloader hierarchy.
static java.lang.ClassLoader	getSystemClassLoader() Returns system class loader.
static java.lang.String	joddLocation() Returns Jodd location.
static java.lang.Class	loadClass(java.lang.String className) Loads a class using default class loader strategy.
static java.lang.Class	loadClass(java.lang.String className, java.lang.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

Constructor Detail

ClassLoaderUtil

public ClassLoaderUtil()

Method Detail

getDefaultClassLoader

public static java.lang.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 java.lang.ClassLoader getContextClassLoader()

Returns thread context class loader.

getSystemClassLoader

public static java.lang.ClassLoader getSystemClassLoader()

Returns system class loader.

getClasspathItemManifest

public static java.util.jar.Manifest getClasspathItemManifest(java.io.File classpathItem)

Returns classpath item manifest or null if not found.

getClasspathItemBaseDir

public static java.lang.String getClasspathItemBaseDir(java.io.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.

getDefaultClasspath

public static java.io.File[] getDefaultClasspath()

Returns default classpath using default classloader.

getDefaultClasspath

public static java.io.File[] getDefaultClasspath(java.lang.ClassLoader classLoader)

Returns default class path from all available URLClassLoader in classloader hierarchy. The following is added to the classpath list:

• file URLs from URLClassLoader (other URL protocols are ignored)
• inner entries from containing manifest files (if exist)
• bootstrap classpath is ignored

getClassAsStream

public static java.io.InputStream getClassAsStream(java.lang.Class clazz)
                                            throws java.io.IOException

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

Throws:

java.io.IOException

getClassAsStream

public static java.io.InputStream getClassAsStream(java.lang.String className)
                                            throws java.io.IOException

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

Throws:

java.io.IOException

getClassAsStream

public static java.io.InputStream getClassAsStream(java.lang.String className,
                                                   java.lang.ClassLoader classLoader)
                                            throws java.io.IOException

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

Throws:

java.io.IOException

loadClass

public static java.lang.Class loadClass(java.lang.String className)
                                 throws java.lang.ClassNotFoundException

Loads a class using default class loader strategy.

Throws:

java.lang.ClassNotFoundException

See Also:

DefaultClassLoaderStrategy

loadClass

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

Loads a class using default class loader strategy.

Throws:

java.lang.ClassNotFoundException

See Also:

DefaultClassLoaderStrategy

classLocation

public static java.lang.String classLocation(java.lang.Class clazz)

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

joddLocation

public static java.lang.String joddLocation()

Returns Jodd location.

See Also:

classLocation(java.lang.Class)