org.codelogger.utils

Class MethodUtils

java.lang.Object

org.codelogger.utils.MethodUtils

public class MethodUtils
extends Object

A useful tools to handle methods, like find public/all method, invoke methods and so on...

Author:

DengDefei

Field Summary

Fields

Modifier and Type	Field and Description
static Class<?>[]	EMPTY_PARAMETER_CLASSTYPES
static Object[]	EMPTY_PARAMETER_VALUES

Method Summary

Methods

Modifier and Type	Method and Description
static Method	findMethod(Class<?> clazz, String methodName, Class<?>[] parameterTypes) Returns a Method object that reflects the specified declared method of the class or interface represented by given class. Returns null if not find.
static Method	findPublicMethod(Class<?> clazz, String methodName, Class<?>[] parameterTypes) Returns a public Method object that reflects the specified public member method of the class or interface represented by given class. Returns null if not find.
static Object	invoke(Object source, Method method, Object[] parameterValues) Invokes given method on the given source object with the specified parameters.
static Object	invoke(Object source, String methodName, Class<?>[] parameterTypes, Object[] parameterValues) Invokes method which name equals given method name and parameter types equals given parameter types on the given source with the given parameters.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_PARAMETER_CLASSTYPES

public static final Class<?>[] EMPTY_PARAMETER_CLASSTYPES

EMPTY_PARAMETER_VALUES

public static final Object[] EMPTY_PARAMETER_VALUES

Method Detail

findPublicMethod

public static Method findPublicMethod(Class<?> clazz,
                      String methodName,
                      Class<?>[] parameterTypes)

Returns a public Method object that reflects the specified public member method of the class or interface represented by given class.
Returns null if not find.

Parameters:

clazz - the method belong to.

methodName - the name of the method which you want to get.

parameterTypes - the parameter types of the method which you want to get.

Returns:

a public Method object that reflects the specified public member method of the class or interface represented by given class.

findMethod

public static Method findMethod(Class<?> clazz,
                String methodName,
                Class<?>[] parameterTypes)

Returns a Method object that reflects the specified declared method of the class or interface represented by given class.
Returns null if not find.

Parameters:

clazz - the method belong to.

methodName - the name of the method which you want to get.

parameterTypes - the parameter types of the method which you want to get.

Returns:

a Method object that reflects the specified public member method of the class or interface represented by given class.

invoke

public static Object invoke(Object source,
            String methodName,
            Class<?>[] parameterTypes,
            Object[] parameterValues)
                     throws MethodException

Invokes method which name equals given method name and parameter types equals given parameter types on the given source with the given parameters.

Parameters:

source - the object which you want to handle.

methodName - the name of the method which you want to call.

parameterTypes - the parameter types of the method which you want to call.

parameterValues - the parameter values of the method which you want to call.

Returns:

an object which is invoked method returns.

Throws:

MethodException

invoke

public static Object invoke(Object source,
            Method method,
            Object[] parameterValues)
                     throws MethodException

Invokes given method on the given source object with the specified parameters.

Parameters:

source - the object which you want to handle.

method - the method which you want to call.

parameterValues - the parameter values of the method which you want to call.

Returns:

an object which is invoked method returns.

Throws:

MethodException