classUtils.reflection
Class ReflectUtil

java.lang.Object
  classUtils.reflection.ReflectUtil

public class ReflectUtil
extends java.lang.Object

ReflectUtil shows several examples of using reflection.

Constructor Summary

ReflectUtil(java.lang.Object _o)
Instance the ReflectUtil with an Object.

Method Summary

static void	addImmediateInterfaces(java.lang.Class c, java.util.Vector v)
static java.lang.Class[]	getAllInterfaces(java.lang.Class c)
java.lang.reflect.Method[]	getAllMethods() Obtain a list of all the methods.
static java.lang.reflect.Method[]	getAllMethods(java.lang.Object o)
java.lang.reflect.Method[]	getAllMethodsNotInObjectClass(java.lang.reflect.Method[] m)
java.lang.reflect.Method[]	getAllPublicMethods()
java.lang.reflect.Method[]	getAllPublicStaticMethods()
static java.lang.String	getBeanDescriptorString(java.beans.BeanInfo bi)
java.lang.String	getBeanInfo()
java.lang.Class	getC() Get the containing class class instance.
java.lang.Class[]	getClasses() getClasses is not implemented in the cutils.reflection API, yet.
java.lang.String	getClassName() Get the name of the containing class.
static javax.swing.JComponent	getComponent(java.lang.Object ip, java.lang.reflect.Method writeMethod)
java.lang.reflect.Constructor[]	getConstructors() Get a list of all the constructors in the containing class.
static java.lang.String	getDisplayName(java.lang.reflect.Method m)
static double	getDouble(java.lang.Object obj)
static java.lang.Double	getDoubleWrapper(java.lang.Object obj)
static java.beans.EventSetDescriptor[]	getEventSetDescriptors(java.lang.Object o)
java.lang.reflect.Field[]	getFields() Get all but the inherited fields.
static java.beans.PropertyDescriptor[]	getIndexedPropertyDescriptors(java.lang.Object o)
java.lang.String	getInfoString(java.lang.reflect.Method m)
java.lang.reflect.Method	getMethod(java.lang.String s)
java.beans.MethodDescriptor[]	getMethodDescriptors()
static java.beans.MethodDescriptor[]	getMethodDescriptors(java.lang.Object o)
MethodList	getMethodList()
java.lang.reflect.Method[]	getMethods() Get all but inherited methods.
java.lang.reflect.Method[]	getMethodsWithNArgs(int n)
static java.lang.reflect.Method[]	getMethodsWithNoArguments(java.lang.Object o)
int	getModifiers(java.lang.reflect.Method m)
java.lang.String	getModifierString(java.lang.reflect.Method m)
java.lang.String	getName(java.lang.reflect.Method m) Get A string representation of the method.
java.lang.Object	getObject()
java.beans.PropertyDescriptor[]	getPropertyDescriptors()
static java.beans.PropertyDescriptor[]	getPropertyDescriptors(java.lang.Object o)
static LabeledItemPanel	getPropertyEditor(java.lang.Object ip)
java.lang.Class[]	getPublicClassMembers() Get a list of public class members that are not inherited.
java.lang.String[]	getReadMethodNames()
java.lang.String[]	getReadMethodNames(int n) Get the method that have exactly n arguments
java.lang.String[]	getReadPublicMethodNames(int n) Get the method that have exactly n arguments
static java.lang.String	getString(java.lang.String prompt)
java.lang.Class[]	getSuperClasses()
static java.lang.Class[]	getSuperInterfaces(java.lang.Class ci) Get all the interfaces implemented by this class, in order of listing.
java.lang.Class[]	getSuperInterfaces(java.lang.Class[] ca)
java.lang.String[]	getWriteMethodNames()
java.lang.String[]	getWriteMethodNames(java.lang.reflect.Method[] m) Filters all the methods on input and returns only the write methods
static boolean	hasMain(java.lang.Class classToBeExamined) Returns true if the Class has a public static void main(String args[]) method in it.
java.lang.Object	invoke(java.lang.String methodName) invoke a methodName string with no arguments.
java.lang.Object	invoke2(java.lang.String methodName) invoke a methodName string with no arguments.
boolean	isContainedBy(java.lang.reflect.Method[] ma, java.lang.reflect.Method m)
static boolean	isNumeric(java.lang.Class obj)
static boolean	isReadMethod(java.lang.reflect.Method method)
static boolean	isWriteMethod(java.lang.reflect.Method method)
static void	main(java.lang.String[] args) Example of reflectUtil usage.
void	print()
static void	print(java.beans.EventSetDescriptor[] esd)
static void	print(java.beans.IndexedPropertyDescriptor[] ipd)
static void	print(java.beans.MethodDescriptor[] md)
void	print(java.lang.Object o)
void	print(java.lang.Object[] o)
static void	print(java.beans.PropertyDescriptor[] pd)
void	printDeclaredMethods()
void	printInfo() print information about the containing instance to the console.
void	printInfo(java.lang.reflect.Method m)
static void	printMethodNamesAndParameters(PrintStub printStub, java.lang.reflect.Method[] ma)
void	startCommandLineInterpreter() starts a simple command line interpreter that takes in method names.
static void	testEventSetDescriptors()
static void	testIndexedPropertyDescriptors()
static void	testIntrospectionEditor()
static void	testIntrospectUtil()
static void	testMethodDescriptors()
static void	testPropertyDescriptors()
static java.lang.String	toString(java.lang.Object[] o) Convert an array of Object into a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectUtil

public ReflectUtil(java.lang.Object _o)

Instance the ReflectUtil with an Object. ReflectUtils gives extra feature not available with reflection.

Parameters:

_o - an instance of an object to be inspected

Method Detail

getConstructors

public java.lang.reflect.Constructor[] getConstructors()

Get a list of all the constructors in the containing class. Default constructors can be returned. For interfaces and primitive data types, no constructor is returned.

Returns:

an array of constructors.

getFields

public java.lang.reflect.Field[] getFields()

Get all but the inherited fields.

Returns:

array of field instances.

getMethods

public java.lang.reflect.Method[] getMethods()

Get all but inherited methods.

Returns:

array of methods

getAllPublicStaticMethods

public java.lang.reflect.Method[] getAllPublicStaticMethods()

printDeclaredMethods

public void printDeclaredMethods()

getAllPublicMethods

public java.lang.reflect.Method[] getAllPublicMethods()

getAllMethods

public java.lang.reflect.Method[] getAllMethods()

Obtain a list of all the methods.

Returns:

an array of all methods (including super classes).

hasMain

public static boolean hasMain(java.lang.Class classToBeExamined)

Returns true if the Class has a public static void main(String args[]) method in it.

Returns:

true if and only if class has a main.

getSuperClasses

public java.lang.Class[] getSuperClasses()

getSuperInterfaces

public java.lang.Class[] getSuperInterfaces(java.lang.Class[] ca)

getSuperInterfaces

public static java.lang.Class[] getSuperInterfaces(java.lang.Class ci)

Get all the interfaces implemented by this class, in order of listing.

Parameters:

ci - class instance to be inspected

Returns:

an array of all the classes that correspond to the interfaces.

getPublicClassMembers

public java.lang.Class[] getPublicClassMembers()

Get a list of public class members that are not inherited.

Returns:

an array of Class class instances.

getAllInterfaces

public static java.lang.Class[] getAllInterfaces(java.lang.Class c)

addImmediateInterfaces

public static void addImmediateInterfaces(java.lang.Class c,
                                          java.util.Vector v)

getReadMethodNames

public java.lang.String[] getReadMethodNames()

getReadPublicMethodNames

public java.lang.String[] getReadPublicMethodNames(int n)

Get the method that have exactly n arguments

Parameters:

n - a number that start affineTransform 0

Returns:

returns the read method array

getReadMethodNames

public java.lang.String[] getReadMethodNames(int n)

Get the method that have exactly n arguments

Parameters:

n - a number that start affineTransform 0

Returns:

returns the read method array

getWriteMethodNames

public java.lang.String[] getWriteMethodNames()

Returns:

method in present class

getWriteMethodNames

public java.lang.String[] getWriteMethodNames(java.lang.reflect.Method[] m)

Filters all the methods on input and returns only the write methods

Parameters:

m -

Returns:

getMethod

public java.lang.reflect.Method getMethod(java.lang.String s)

Parameters:

s - a method name

Returns:

a method that corresponds to this name

invoke

public java.lang.Object invoke(java.lang.String methodName)

invoke a methodName string with no arguments.

getModifiers

public int getModifiers(java.lang.reflect.Method m)

Parameters:

m - a method to be inspected

Returns:

modifiers encoded as an int.

getModifierString

public java.lang.String getModifierString(java.lang.reflect.Method m)

Parameters:

m - method

Returns:

a string representation of the modifiers

toString

public static java.lang.String toString(java.lang.Object[] o)

Convert an array of Object into a string.

Parameters:

o - an array of string in

Returns:

a big string with new lines out

printInfo

public void printInfo()

print information about the containing instance to the console.

getClassName

public java.lang.String getClassName()

Get the name of the containing class.

Returns:

classname.

getMethodsWithNArgs

public java.lang.reflect.Method[] getMethodsWithNArgs(int n)

getName

public java.lang.String getName(java.lang.reflect.Method m)

Get A string representation of the method.

Parameters:

m - method name

Returns:

the name of the method

getInfoString

public java.lang.String getInfoString(java.lang.reflect.Method m)

printInfo

public void printInfo(java.lang.reflect.Method m)

main

public static void main(java.lang.String[] args)

Example of reflectUtil usage.

Parameters:

args - ignored.

startCommandLineInterpreter

public void startCommandLineInterpreter()

starts a simple command line interpreter that takes in method names.

getString

public static java.lang.String getString(java.lang.String prompt)

getC

public java.lang.Class getC()

Get the containing class class instance.

Returns:

The containing class class.

getAllMethods

public static java.lang.reflect.Method[] getAllMethods(java.lang.Object o)

getMethodsWithNoArguments

public static java.lang.reflect.Method[] getMethodsWithNoArguments(java.lang.Object o)

invoke2

public java.lang.Object invoke2(java.lang.String methodName)

invoke a methodName string with no arguments.

printMethodNamesAndParameters

public static void printMethodNamesAndParameters(PrintStub printStub,
                                                 java.lang.reflect.Method[] ma)

getClasses

public java.lang.Class[] getClasses()

getClasses is not implemented in the cutils.reflection API, yet.

isContainedBy

public boolean isContainedBy(java.lang.reflect.Method[] ma,
                             java.lang.reflect.Method m)

getAllMethodsNotInObjectClass

public java.lang.reflect.Method[] getAllMethodsNotInObjectClass(java.lang.reflect.Method[] m)

testIndexedPropertyDescriptors

public static void testIndexedPropertyDescriptors()
                                           throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

getIndexedPropertyDescriptors

public static java.beans.PropertyDescriptor[] getIndexedPropertyDescriptors(java.lang.Object o)
                                                                     throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

print

public static void print(java.beans.PropertyDescriptor[] pd)

print

public static void print(java.beans.IndexedPropertyDescriptor[] ipd)

getBeanInfo

public java.lang.String getBeanInfo()

getBeanDescriptorString

public static java.lang.String getBeanDescriptorString(java.beans.BeanInfo bi)

print

public void print()

print

public void print(java.lang.Object o)

testPropertyDescriptors

public static void testPropertyDescriptors()
                                    throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

getPropertyDescriptors

public static java.beans.PropertyDescriptor[] getPropertyDescriptors(java.lang.Object o)
                                                              throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

testMethodDescriptors

public static void testMethodDescriptors()
                                  throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

print

public static void print(java.beans.MethodDescriptor[] md)

getMethodDescriptors

public static java.beans.MethodDescriptor[] getMethodDescriptors(java.lang.Object o)
                                                          throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

testEventSetDescriptors

public static void testEventSetDescriptors()
                                    throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

getEventSetDescriptors

public static java.beans.EventSetDescriptor[] getEventSetDescriptors(java.lang.Object o)
                                                              throws java.beans.IntrospectionException

Throws:

java.beans.IntrospectionException

print

public static void print(java.beans.EventSetDescriptor[] esd)

print

public void print(java.lang.Object[] o)

testIntrospectUtil

public static void testIntrospectUtil()

getObject

public java.lang.Object getObject()

getMethodList

public MethodList getMethodList()

getPropertyDescriptors

public java.beans.PropertyDescriptor[] getPropertyDescriptors()

getMethodDescriptors

public java.beans.MethodDescriptor[] getMethodDescriptors()

getDisplayName

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

getDouble

public static double getDouble(java.lang.Object obj)

getDoubleWrapper

public static java.lang.Double getDoubleWrapper(java.lang.Object obj)

isNumeric

public static boolean isNumeric(java.lang.Class obj)

Parameters:

obj - any object to be tested

Returns:

true if the object is numeric

testIntrospectionEditor

public static void testIntrospectionEditor()

getPropertyEditor

public static LabeledItemPanel getPropertyEditor(java.lang.Object ip)

getComponent

public static javax.swing.JComponent getComponent(java.lang.Object ip,
                                                  java.lang.reflect.Method writeMethod)

isReadMethod

public static boolean isReadMethod(java.lang.reflect.Method method)

isWriteMethod

public static boolean isWriteMethod(java.lang.reflect.Method method)