java 三年需要掌握的技术总结

桃扇骨 2022-03-17 07:38 178阅读 0赞

一个牛逼的面试技巧github  [https://github.com/Snailclimb/JavaGuide][https_github.com_Snailclimb_JavaGuide]

2019面试总结大全 [https://github.com/0voice/interview\_internal\_reference][https_github.com_0voice_interview_internal_reference]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1Mjc1MjMz_size_16_color_FFFFFF_t_70][]

> 1.  联合索引生效条件、失效条件： [https://blog.csdn.net/qq\_35275233/article/details/87888809][https_blog.csdn.net_qq_35275233_article_details_87888809]
> 2.  Hashmap key相同如何取到正确的值（坑人的题目) : [https://blog.csdn.net/qq\_35275233/article/details/87891325][https_blog.csdn.net_qq_35275233_article_details_87891325]
> 3.  如何用栈实现队列：[https://blog.csdn.net/qq\_35275233/article/details/87892288][https_blog.csdn.net_qq_35275233_article_details_87892288]
> 4.  redis两种备份方式：[https://blog.csdn.net/qq\_35275233/article/details/87892822][https_blog.csdn.net_qq_35275233_article_details_87892822]
> 5.  线程池：[https://blog.csdn.net/qq\_35275233/article/details/87893337][https_blog.csdn.net_qq_35275233_article_details_87893337]
> 6.  start和run的区别：[https://blog.csdn.net/qq\_35275233/article/details/87896475][https_blog.csdn.net_qq_35275233_article_details_87896475]
> 7.  常见的设计模式以及工厂模式应用场景：
> 8.  聚簇索引和非聚簇索引的区别（理解不了）：
> 9.  innodb什么情况行锁会变成表锁：
> 10. 不借用第三个变量，如何交换两个变量的值: [https://blog.csdn.net/qq\_35275233/article/details/87896056][https_blog.csdn.net_qq_35275233_article_details_87896056]
> 11. IOC控制反转：

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> jvm 内存分区: [https://blog.csdn.net/qq\_35275233/article/details/87886915][https_blog.csdn.net_qq_35275233_article_details_87886915]
> 
> gc算法：
> 
> SpringAopBean创建机制：
> 
> 反射，反射应用场景：
> 
> 如何理解面向接口编程：
> 
> 两个java项目运行在同一个电脑上，那这个电脑上有几个jvm
> 
> 如何实现一个注解：
> 
> jvm向操作系统申请内存的过程：

3. 阿里相关（一面）

>  *  hashmap的原理，haspmap和hashtable的区别
>  *  ConcurrentHashMap和hashtable线程安全的原理
>  *  redis的集群之间怎么同步数据
>  *  mysql的主库和备库怎么做

[https_github.com_Snailclimb_JavaGuide]: https://github.com/Snailclimb/JavaGuide
[https_github.com_0voice_interview_internal_reference]: https://github.com/0voice/interview_internal_reference
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[https_blog.csdn.net_qq_35275233_article_details_87888809]: https://blog.csdn.net/qq_35275233/article/details/87888809
[https_blog.csdn.net_qq_35275233_article_details_87891325]: https://blog.csdn.net/qq_35275233/article/details/87891325
[https_blog.csdn.net_qq_35275233_article_details_87892288]: https://blog.csdn.net/qq_35275233/article/details/87892288
[https_blog.csdn.net_qq_35275233_article_details_87892822]: https://blog.csdn.net/qq_35275233/article/details/87892822
[https_blog.csdn.net_qq_35275233_article_details_87893337]: https://blog.csdn.net/qq_35275233/article/details/87893337
[https_blog.csdn.net_qq_35275233_article_details_87896475]: https://blog.csdn.net/qq_35275233/article/details/87896475
[https_blog.csdn.net_qq_35275233_article_details_87896056]: https://blog.csdn.net/qq_35275233/article/details/87896056
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[https_blog.csdn.net_qq_35275233_article_details_87886915]: https://blog.csdn.net/qq_35275233/article/details/87886915