java学习基础网站

www.eclipse.org
https://www.runoob.com/java/java-environment-setup.html
https://www.runoob.com/try/runcode.php?filename=HelloWorld&type=java
https://edu.csdn.net/course/play/9876/209862?utm_source=distribute.pc_search_result.none-task

https://edu.csdn.net/course/play/2888?utm_source=distribute.pc_search_result.none-task
https://edu.csdn.net/courses/o230_k/p2?utm_source=distribute.pc_search_result.none-task