ch.icosys.popjava.core.util

Class ClassUtil

java.lang.Object

ch.icosys.popjava.core.util.ClassUtil

public class ClassUtil
extends java.lang.Object

This class gives some static methods to look inside a class

Constructor Summary

Constructors

Constructor and Description
ClassUtil()

Method Summary

Modifier and Type	Method and Description
static boolean	areParameterTypesTheSame(java.lang.Class<?>[] params, java.lang.Class<?>[] constructorParameters)
static int	classId(java.lang.Class<?> clazz) Generate an ID or use the one specified
static java.lang.reflect.Constructor<?>	getConstructor(java.lang.Class<?> c, java.lang.Class<?>... parameterTypes) Retrieve a specific constructor in the given class
static java.lang.Object	getDefaultPrimitiveValue(java.lang.Class<?> c) Get a default object of a primitive class
static java.lang.reflect.Method	getMethod(java.lang.Class<?> c, java.lang.String methodName, java.lang.Class<?>... parameterTypes) Retrieve a specific method in the given class
static java.lang.String	getMethodSign(java.lang.reflect.Constructor<?> c) Get the signature of a constructor
static java.lang.String	getMethodSign(java.lang.reflect.Method m) Get the signature of a method
static java.lang.Class<?>[]	getObjectTypes(java.lang.Object... objects)
static boolean	isAssignableFrom(java.lang.Class<?> first, java.lang.Class<?> second) Determines if the first class is the same or a superclass of the second

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

getObjectTypes

public static java.lang.Class<?>[] getObjectTypes(java.lang.Object... objects)

getConstructor

public static java.lang.reflect.Constructor<?> getConstructor(java.lang.Class<?> c,
                                                              java.lang.Class<?>... parameterTypes)
                                                       throws java.lang.NoSuchMethodException

Retrieve a specific constructor in the given class

Parameters:

c - The class to look in

parameterTypes - Parameters of the constructor to retrieve

Returns:

The retrieved constructor

Throws:

java.lang.NoSuchMethodException - Thrown if the constructor is not found

getMethod

public static java.lang.reflect.Method getMethod(java.lang.Class<?> c,
                                                 java.lang.String methodName,
                                                 java.lang.Class<?>... parameterTypes)
                                          throws java.lang.NoSuchMethodException

Retrieve a specific method in the given class

Parameters:

c - The class to look in

methodName - The name of the method to retrieve

parameterTypes - Parameters of the method to retrieve

Returns:

The retrieved method

Throws:

java.lang.NoSuchMethodException - Thrown if the method is not found

getMethodSign

public static java.lang.String getMethodSign(java.lang.reflect.Method m)

Get the signature of a method

Parameters:

m - The method

Returns:

Signature of the given method as a string value

getMethodSign

public static java.lang.String getMethodSign(java.lang.reflect.Constructor<?> c)

Get the signature of a constructor

Parameters:

c - The constructor

Returns:

Signature of the constructor as a string value

isAssignableFrom

public static boolean isAssignableFrom(java.lang.Class<?> first,
                                       java.lang.Class<?> second)

Determines if the first class is the same or a superclass of the second

Parameters:

first - First class

second - Second class

Returns:

true is the class is assignable

areParameterTypesTheSame

public static boolean areParameterTypesTheSame(java.lang.Class<?>[] params,
                                               java.lang.Class<?>[] constructorParameters)

getDefaultPrimitiveValue

public static java.lang.Object getDefaultPrimitiveValue(java.lang.Class<?> c)

Get a default object of a primitive class

Parameters:

c - The primitive class

Returns:

Object with default value

classId

public static int classId(java.lang.Class<?> clazz)

Generate an ID or use the one specified

Parameters:

clazz - the class we want an id of

Returns:

a numeric positive identifier