确定继承树中给定对象与给定类的距离。

/*

 * Copyright 2013 Balazs Berkes.

 *

 * 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 static java.lang.reflect.Modifier.isFinal;

import static java.lang.reflect.Modifier.isPublic;
/** 
来 自 
NowJava.com
**/

import static java.lang.reflect.Modifier.isStatic;

import static org.mockannotations.utils.MockAnnotationValidationUtils.notNull;

import java.lang.reflect.Field;

import java.lang.reflect.Method;

import java.lang.reflect.ParameterizedType;

import java.lang.reflect.Type;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collections;

import java.util.List;/** 时代Java公众号 - N o w J a  v a . c o m 提 供 **/


public class Main{

    public static void main(String[] argv) throws Exception{

        Object object = "nowjava.com";

        Class clazz = String.class;

        System.out.println(getInheritanceDistance(object,clazz));

    }

    /**

     * Determines the distance of the given object to the given class in the

     * inheritance tree.

     * <p>

     * @param object the root object

     * @param clazz the class to determine the distance to

     * @return the distance of the object to the class. If the object is not an

     * instance of the class {@code -1} will return.

     */

    public static int getInheritanceDistance(Object object, Class<?> clazz) {

        if (clazz.isInstance(object)) {

            return calculateDistance(object.getClass(), clazz);

        } else {

            return -1;

        }

    }

    private