com.cedarsoftware.util

Class ClassUtilities

java.lang.Object

com.cedarsoftware.util.ClassUtilities

public class ClassUtilities
extends Object

Useful utilities for Class work. For example, call computeInheritanceDistance(source, destination) to get the inheritance distance (number of super class steps to make it from source to destination. It will return the distance as an integer. If there is no inheritance relationship between the two, then -1 is returned. The primitives and primitive wrappers return 0 distance as if they are the same class.

Author:

John DeRegnaucourt ([email protected])
Copyright (c) Cedar Software LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

License

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Constructor Summary

Constructors

Constructor and Description
ClassUtilities()

Method Summary

Modifier and Type	Method and Description
static boolean	areAllConstructorsPrivate(Class<?> c)
static int	computeInheritanceDistance(Class<?> source, Class<?> destination) Computes the inheritance distance between two classes/interfaces/primitive types.
static Class<?>	forName(String name, ClassLoader classLoader) Given the passed in String class name, return the named JVM class.
static boolean	isClassFinal(Class<?> c)
static boolean	isPrimitive(Class<?> c)
static Class<?>	toPrimitiveWrapperClass(Class<?> primitiveClass)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClassUtilities

public ClassUtilities()

Method Detail

computeInheritanceDistance

public static int computeInheritanceDistance(Class<?> source,
                                             Class<?> destination)

Computes the inheritance distance between two classes/interfaces/primitive types.

Parameters:

source - The source class, interface, or primitive type.

destination - The destination class, interface, or primitive type.

Returns:

The number of steps from the source to the destination, or -1 if no path exists.

isPrimitive

public static boolean isPrimitive(Class<?> c)

Parameters:

c - Class to test

Returns:

boolean true if the passed in class is a Java primitive, false otherwise. The Wrapper classes Integer, Long, Boolean, etc. are considered primitives by this method.

forName

public static Class<?> forName(String name,
                               ClassLoader classLoader)

Given the passed in String class name, return the named JVM class.

Parameters:

name - String name of a JVM class.

classLoader - ClassLoader to use when searching for JVM classes.

Returns:

Class instance of the named JVM class or null if not found.

isClassFinal

public static boolean isClassFinal(Class<?> c)

areAllConstructorsPrivate

public static boolean areAllConstructorsPrivate(Class<?> c)

toPrimitiveWrapperClass

public static Class<?> toPrimitiveWrapperClass(Class<?> primitiveClass)