java基础：

https://www.bilibili.com/video/av11361088/?p=106

javaWeb基础：

https://www.bilibili.com/video/av29086718?from=search&seid=15695613828841939438

Mysql基础：

https://www.bilibili.com/video/av49181542?from=search&seid=15593716162834150891

Oracle从入门到精通教程

https://www.bilibili.com/video/av14537979?from=search&seid=1440817139729418031

Redis教程

https://www.bilibili.com/video/av49517046/?spm_id_from=333.788.videocard.1

并发编程

https://www.bilibili.com/video/av43697557?from=search&seid=663193690847606582

jdk新特性

https://www.bilibili.com/video/av59549886/

sping框架

https://www.bilibili.com/video/av15369076?from=search&seid=12088451245683404585

Mybatis框架

https://www.bilibili.com/video/av25677166/?spm_id_from=333.788.videocard.1

Jvm

https://www.bilibili.com/video/av47756459?p=2

如果后面找到的话后面再补充吧。初学者可以试着学习。复制链接接打开。