Constructor Detail

• ClassUtils

  public ClassUtils()

Method Detail

• setDefaultClassLoader

  public static void setDefaultClassLoader(ClassLoader loader)

  Set the default ClassLoader. If loader is null, the default loader is not changed.

  Parameters:

  loader - the new default ClassLoader

• getDefaultClassLoader

  public static ClassLoader getDefaultClassLoader()

• forName

  public static Class forName(String className)
                       throws ClassNotFoundException

  Use this method instead of Class.forName

  Parameters:

  className - Class name

  Returns:

  java class

  Throws:

  ClassNotFoundException - if the class is not found

• forName

  public static Class forName(String _className,
              boolean init,
              ClassLoader _loader)
                       throws ClassNotFoundException

  Use this method instead of Class.forName (String className, boolean init, ClassLoader loader)

  Parameters:

  _className - Class name

  init - initialize the class

  _loader - class loader

  Returns:

  java class

  Throws:

  ClassNotFoundException - if the class is not found

• getResourceAsStream

  public static InputStream getResourceAsStream(String resource,
                                ClassLoader fallbackClassLoader)

  Get an input stream from a named resource. Tries

  1. the thread context class loader
  2. the given fallback classloader
  3. the system classloader

  Parameters:

  resource - resource string to look for

  fallbackClassLoader - the class loader to use if the resource could not be loaded from the thread context class loader

  Returns:

  input stream if found, or null

• getResourceAsStream

  public static InputStream getResourceAsStream(Class clazz,
                                String resource)

  Get an input stream from a named resource. Tries

  1. the classloader that loaded "clazz" first,
  2. the system classloader
  3. the class "clazz" itself

  Parameters:

  clazz - class to use in the lookups

  resource - resource string to look for

  Returns:

  input stream if found, or null

• createClassLoader

  public static ClassLoader createClassLoader(String classpath,
                              ClassLoader parent)
                                       throws SecurityException

  Creates a new ClassLoader from a classpath specification and a parent class loader. The classpath string will be split using the system path seperator character (e.g. : or ;), just as the java system-wide class path is processed.

  Parameters:

  classpath - the classpath String

  parent - the parent ClassLoader, or null if the default is to be used

  Throws:

  SecurityException - if you don't have privilages to create class loaders

  IllegalArgumentException - if your classpath string is silly