注解和反射13.性能对比分析

public static void test01(){
        User user = new User();
        long startTime = System.currentTimeMillis();
        for (int i = 0;i<1000000000;i++){
            user.getName();
        }
        long endTime = System.currentTimeMillis();
        System.out.println("普通方法执行10亿次"+(endTime-startTime)+"ms");
    }
    public static void test02(){
        User user = new User();
         User user=  user.getclass();
        Method getName =  user.getDeclaredMethod("getName",null);
        long startTime = System.currentTimeMillis();
        for (int i = 0;i<1000000000;i++){
            getName.invoke("user",null);
        }
        long endTime = System.currentTimeMillis();
        System.out.println("反射方式执行10亿次"+(endTime-startTime)+"ms");
    }
    public static void test03(){
        User user = new User();
        long startTime = System.currentTimeMillis();
        get.Name.setAccessible(true);
        for (int i = 0;i<1000000000;i++){
            user.getName();
        }
        long endTime = System.currentTimeMillis();
        System.out.println("关闭监测执行10亿次"+(endTime-startTime)+"ms");
    }