Field Detail

• INSTANCE

  public static final ClassUtils INSTANCE

Constructor Detail

• ClassUtils

  private ClassUtils()

Method Detail

• getInstance

  public ClassUtils getInstance()

• getThreadContextLoader

  private static final java.lang.ClassLoader getThreadContextLoader()

• getClassLoader

  private static final java.lang.ClassLoader getClassLoader()

• getCallerLoader

  private static final java.lang.ClassLoader getCallerLoader(java.lang.Object caller)

• getClass

  public static java.lang.Class getClass(java.lang.String name)
                                  throws java.lang.ClassNotFoundException

  Load a class with a given name.

  It will try to load the class in the following order:

  • From Thread.currentThread().getContextClassLoader()
  • Using the basic Class.forName(java.lang.String)
  • From ClassUtils.class.getClassLoader()

  Parameters:

  name - Fully qualified class name to be loaded

  Returns:

  Class object

  Throws:

  java.lang.ClassNotFoundException - if the class cannot be found

• getInstance

  public static java.lang.Object getInstance(java.lang.String classname)
                                      throws java.lang.ClassNotFoundException,
                                             java.lang.IllegalAccessException,
                                             java.lang.InstantiationException

  Throws:

  java.lang.ClassNotFoundException

  java.lang.IllegalAccessException

  java.lang.InstantiationException

• getResources

  public static java.util.List<java.net.URL> getResources(java.lang.String name,
                                                          java.lang.Object caller)

  Load all resources with the specified name. If none are found, we prepend the name with '/' and try again. This will attempt to load the resources from the following methods (in order):

  • Thread.currentThread().getContextClassLoader().getResources(name)
  • ClassUtils.class.getClassLoader().getResources(name)
  • ClassUtils.class.getResource(name)
  • getCallerLoader(Object caller).getResources(name)
  • caller.getClass().getResource(name)

  Parameters:

  name - The name of the resources to load

  caller - The instance or Class calling this method

• addResource

  private static final void addResource(java.lang.String name,
                                        java.util.Set<java.lang.String> urls,
                                        java.lang.Class c)

• addResources

  private static final boolean addResources(java.lang.String name,
                                            java.util.Set<java.lang.String> urls,
                                            java.lang.ClassLoader loader)

• getResource

  public static java.net.URL getResource(java.lang.String name,
                                         java.lang.Object caller)

  Load a given resource.

  This method will try to load the resource using the following methods (in order):

  • Thread.currentThread().getContextClassLoader().getResource(name)
  • ClassUtils.class.getClassLoader().getResource(name)
  • ClassUtils.class.getResource(name)
  • caller.getClass().getResource(name) or, if caller is a Class, caller.getResource(name)

  Parameters:

  name - The name of the resource to load

  caller - The instance or Class calling this method

• getResourceAsStream

  public static java.io.InputStream getResourceAsStream(java.lang.String name,
                                                        java.lang.Object caller)

  This is a convenience method to load a resource as a stream.

  The algorithm used to find the resource is given in getResource()

  Parameters:

  name - The name of the resource to load

  caller - The instance or Class calling this method

• findMethod

  public static java.lang.reflect.Method findMethod(java.lang.Class clazz,
                                                    java.lang.String name,
                                                    java.lang.Class[] params)
                                             throws java.lang.SecurityException

  Throws:

  java.lang.SecurityException

• findDeclaredMethod

  public static java.lang.reflect.Method findDeclaredMethod(java.lang.Class clazz,
                                                            java.lang.String name,
                                                            java.lang.Class[] params)
                                                     throws java.lang.SecurityException

  Throws:

  java.lang.SecurityException

• getFieldValue

  public static java.lang.Object getFieldValue(java.lang.String fieldPath)
                                        throws java.lang.ClassNotFoundException,
                                               java.lang.NoSuchFieldException,
                                               java.lang.SecurityException,
                                               java.lang.IllegalAccessException

  Throws:

  java.lang.ClassNotFoundException

  java.lang.NoSuchFieldException

  java.lang.SecurityException

  java.lang.IllegalAccessException

• getFieldValue

  public static java.lang.Object getFieldValue(java.lang.Class clazz,
                                               java.lang.String fieldname)
                                        throws java.lang.NoSuchFieldException,
                                               java.lang.SecurityException,
                                               java.lang.IllegalAccessException

  Throws:

  java.lang.NoSuchFieldException

  java.lang.SecurityException

  java.lang.IllegalAccessException

• getIterator

  public static java.util.Iterator getIterator(java.lang.Object obj)
                                        throws java.lang.NoSuchMethodException,
                                               java.lang.IllegalAccessException,
                                               java.lang.reflect.InvocationTargetException

  Retrieves an Iterator from or creates and Iterator for the specified object. This method is almost entirely copied from Engine's UberspectImpl class.

  Throws:

  java.lang.NoSuchMethodException

  java.lang.IllegalAccessException

  java.lang.reflect.InvocationTargetException