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