Checks if the given class contains a method with the same signature. - Java Reflection

Java examples for Reflection:Method

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Description

Checks if the given class contains a method with the same signature.

Demo Code

/*//from  w  ww  .  j a  va2  s  .  c om
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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;
import javax.enterprise.inject.Typed;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.jar.Manifest;
import java.util.jar.Attributes;
import java.net.URL;

public class Main{
    /**
     * Checks if the given class contains a method with the same signature.
     * 
     * @param targetClass The class to check
     * @param method The source method
     * @return if it contains a method with the same signature.
     */
    public static boolean containsMethod(Class<?> targetClass, Method method) {
        return extractMethod(targetClass, method) != null;
    }
    /**
     * Extracts a method with same signature as the source method.
     * 
     * @param clazz The target class
     * @param sourceMethod The source method.
     * @return the extracted method or <code>null</code>
     */
    public static Method extractMethod(Class<?> clazz, Method sourceMethod) {
        try {
            String name = sourceMethod.getName();
            return clazz != null ? clazz.getMethod(name,
                    sourceMethod.getParameterTypes()) : null;
        } catch (NoSuchMethodException e) {
            return null;
        }
    }
}

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