package reflectionZ;

import java.lang.reflect.Field;

import java.lang.reflect.Method;

public class Treflection04

{

    // 第17讲

    public static void main(String[] args) throws Exception

    {

        Test2 test2 = new Test2();

        //int iRtn = Sum01(test2);

        int iRtn = Sum02(test2);

        System.out.println("iRtn : "+iRtn);

    }

    public static int Sum01(Test2 _test2) throws Exception

    {

        int iRst = 0;

        Class<?> clazz1 = Class.forName("reflectionZ.Test2");

        Field[] fields = clazz1.getDeclaredFields();

        for (int i=0; i<fields.length; i++)

        {

            Field field = fields[i];

            System.out.println("field.getGenericType() : "+field.getGenericType());

            //if (int.class == field.getType()) // 方法1

            if (field.getGenericType().toString().equalsIgnoreCase("int")) // 方法2

            {

                field.setAccessible(true);

                int j = field.getInt(_test2);

                iRst += j;

            }

        }

        return iRst;

    }

    public static int Sum02(Test2 _test2) throws Exception

    {

        int iRst = 0;

        Class<?> clazz1 = Class.forName("reflectionZ.Test2");

        Method[] methods = clazz1.getMethods();

        for (int i=0; i<methods.length; i++)

        {

            Method method = methods[i];

            if (method.getName().startsWith("get") && (! method.getName().equalsIgnoreCase("getClass"))) // 排除掉 getClass()

            {

                // 函数 有返回值，处理方式

                //int j = (int)method.invoke(_test2); // ZC: 这种处理方式 ==> 行不通

                Integer j = (Integer)method.invoke(_test2);

                iRst += j;

            }

        }

        return iRst;

    }

}

class Test2

{

    public static final Long serverUID = 1L;

    private int FiIdx1 = 10;

    private int FiIdx2 = 20;

    private int FiIdx3 = 30;

    private int FiIdx4 = 40;

    private int FiIdx5 = 50;

    public int getFiIdx1() {

        return FiIdx1;

    }

    public int getFiIdx2() {

        return FiIdx2;

    }

    public int getFiIdx3() {

        return FiIdx3;

    }

    public int getFiIdx4() {

        return FiIdx4;

    }

    public int getFiIdx5() {

        return FiIdx5;

    }

}