Class ClassUtil

java.lang.Object
org.apache.tiles.request.reflect.ClassUtil

public final class ClassUtil extends Object
Utilities to work with dynamic class loading and instantiation.
  • Method Details

    • getClass

      public static <T> Class<? extends T> getClass(String className, Class<T> baseClass) throws ClassNotFoundException
      Returns the class and casts it to the correct subclass.
      It tries to use the thread's current classloader first and, if it does not succeed, uses the classloader of ClassUtil.
      Type Parameters:
      T - The subclass to use.
      Parameters:
      className - The name of the class to load.
      baseClass - The base class to subclass to.
      Returns:
      The loaded class.
      Throws:
      ClassNotFoundException - If the class has not been found.
    • instantiate

      public static Object instantiate(String className)
      Returns an instance of the given class name, by calling the default constructor.
      Parameters:
      className - The class name to load and to instantiate.
      Returns:
      The new instance of the class name.
      Throws:
      CannotInstantiateObjectException - If something goes wrong during instantiation.
    • instantiate

      public static Object instantiate(String className, boolean returnNull)
      Returns an instance of the given class name, by calling the default constructor.
      Parameters:
      className - The class name to load and to instantiate.
      returnNull - If true, if the class is not found it returns true, otherwise it throws a TilesException.
      Returns:
      The new instance of the class name.
      Throws:
      CannotInstantiateObjectException - If something goes wrong during instantiation.
    • collectBeanInfo

      public static void collectBeanInfo(Class<?> clazz, Map<String,PropertyDescriptor> name2descriptor)
      Collects bean infos from a class and filling a list.
      Parameters:
      clazz - The class to be inspected.
      name2descriptor - The map in the form: name of the property -> descriptor.