20 Java communities and websites along with their corresponding links

1.⁠ ⁠Stack Overflow: stackoverflow.com  2.⁠ ⁠Java Reddit: reddit.com/r/java  3.⁠ ⁠Oracle Developer Community: community.oracle.com/community/developer  4.⁠ ⁠Java Code Geeks: javacodegeeks.com  5.⁠ ⁠Java Ranch: coderanch.com  6.⁠ ⁠GitHub: github.com  ...