Java Reflection Method Get from Object getMethod(Class objectType, String methodName, Class... parameterTypes)

Description

Returns the method on the objectType with the given name and given parameter types.

License

Apache License

Parameter

Parameter	Description
objectType	the object type
methodName	the method name
parameterTypes	the parameter types

Return

a method or null if it does not exist.

Declaration

public static Method getMethod(Class<?> objectType, String methodName, Class<?>... parameterTypes) 

Method Source Code

//package com.java2s;
/*//from   w ww . j a va 2  s  .c  o  m
 * Copyright 2007 the original author or authors.
 *
 * 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 */

import java.lang.reflect.Method;

public class Main {
    /**
     * Returns the method on the objectType with the given name and given parameter types.
     * 
     * @param objectType the object type
     * @param methodName the method name
     * @param parameterTypes the parameter types
     * @return a method or null if it does not exist.
     */
    public static Method getMethod(Class<?> objectType, String methodName, Class<?>... parameterTypes) {
        try {
            Method method = objectType.getDeclaredMethod(methodName, parameterTypes);
            if (method == null) {
                method = objectType.getMethod(methodName, parameterTypes);
            }
            return method;
        } catch (Exception e) {
            return null;
        }
    }
}

Related

1. getMethod(Class clz, String methodName, Class[] methodArgs)
2. getMethod(Class type, String name, Class... parameterTypes)
3. getMethod(Class cls, String method, Object[] params)
4. getMethod(Class clz, String methodName, Object... params)
5. getMethod(Class klass, String methodName, Object... params)
6. getMethod(Class type, String name, Object[] args)
7. getMethod(final Class clazz, final String methodName, final Class[] parTypes, final Object[] parameters)
8. getMethod(final Object object, final String methodName, final Class... parameterClass)
9. getMethod(final Object object, final String methodName, final Object... arguments)