jd.util
Class ClassUtil

java.lang.Object
  jd.util.ClassUtil

public class ClassUtil

extends Object

A collection of class utility functions.

Constructor Summary

ClassUtil()

Method Summary

static Class	classForName(String className) A replacement for Class.forName.
static String	getClassName(Class c) Return the name of a class without the package prefix.
static String	getClassName(Object object) Return the name of the class of an object without the package prefix.
static String	getPackageName(Class c) Return package prefix of a class name.
static String	getPackageName(Object object) Return package prefix of a class name.
static Object	newInstance(Class c, Object parameter) Create a new instance of a class calling a constructor with one argument.
static Object	newInstance(Class c, Object[] parameters) Create a new instance of a class calling a constructor with several arguments.
static Object	newInstance(String className) Create a new instance of a class.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassUtil

public ClassUtil()

Method Detail

classForName

public static Class classForName(String className)
                          throws ClassNotFoundException

A replacement for Class.forName. The method using the context class loader to load a class if running under Java2 or higher.

Throws:

ClassNotFoundException

newInstance

public static Object newInstance(String className)
                          throws InstantiationException,
                                 IllegalAccessException,
                                 ClassNotFoundException

Create a new instance of a class.

Parameters:

className - the name of the class

Throws:

InstantiationException - all possible exceptions are converted to a InstantiationException

IllegalAccessException

ClassNotFoundException

newInstance

public static Object newInstance(Class c,
                                 Object parameter)
                          throws InvocationTargetException,
                                 InstantiationException

Create a new instance of a class calling a constructor with one argument.

Parameters:

c - the Class

parameter - the constructor parameter.

Throws:

InvocationTargetException

InstantiationException

newInstance

public static Object newInstance(Class c,
                                 Object[] parameters)
                          throws InstantiationException,
                                 InvocationTargetException

Create a new instance of a class calling a constructor with several arguments.

Parameters:

parameters - an array of constructor parameters.

Throws:

InstantiationException

InvocationTargetException

getClassName

public static String getClassName(Object object)

Return the name of the class of an object without the package prefix.

getClassName

public static String getClassName(Class c)

Return the name of a class without the package prefix.

getPackageName

public static String getPackageName(Object object)

Return package prefix of a class name.

getPackageName

public static String getPackageName(Class c)

Return package prefix of a class name.