Java Reflection Constructor Get getConstructor(Class type, Constructor c)

Description

get Constructor

License

Apache License

Declaration

static Constructor<?> getConstructor(Class<?> type, Constructor<?> c) 

Method Source Code

//package com.java2s;
/*/*from www . ja  v  a2s .  co m*/
 * 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.Constructor;

import java.lang.reflect.Modifier;

public class Main {
    static Constructor<?> getConstructor(Class<?> type, Constructor<?> c) {
        if (c == null || Modifier.isPublic(type.getModifiers())) {
            return c;
        }
        Constructor<?> cp = null;
        Class<?> sup = type.getSuperclass();
        if (sup != null) {
            try {
                cp = sup.getConstructor(c.getParameterTypes());
                cp = getConstructor(cp.getDeclaringClass(), cp);
                if (cp != null) {
                    return cp;
                }
            } catch (NoSuchMethodException e) {
                // Ignore
            }
        }
        return null;
    }
}

Related

1. getConstructor(Class cls, Class[] signature)
2. getConstructor(Class cls, Object... parameters)
3. getConstructor(Class klass, Class... parameterTypes)
4. getConstructor(Class sourceClass, boolean isFindDeclaredConstructor, boolean isUpwardFind, Class... constructorParameterTypes)
5. getConstructor(Class theClass, Class[] paramTypes)
6. getConstructor(Class type, Object[] args)
7. getConstructor(Class type, Class[] givenTypes)
8. getConstructor(Class aClass)
9. getConstructor(Class cl, Class... params)