1、java-design-patterns 设计模式在java中的应用
https://github.com/iluwatar/java-design-patterns
2、advanced-java 互联网 Java 工程师进阶知识完全扫盲
https://github.com/doocs/advanced-java
3、spring-framework
https://github.com/spring-projects/spring-framework
4、spring-boot
https://github.com/spring-projects/spring-boot
5、mall 电商项目，包含了java web常用的技术栈
https://github.com/macrozheng/mall
6、leetcode 刷算法题
https://github.com/azl397985856/leetcode
7、常用算法的java实现
https://github.com/TheAlgorithms/Java
8、guava google开源的java技术的核心类库
https://github.com/google/guava
