lsp-grammarly VS lsp-java

Have you tried https://github.com/emacs-grammarly/lsp-grammarly ?

Do you mean something like lsp-grammarly?

Would people recommend using lsp-grammerly or flycheck-grammerly?

Emacs also has grammarly.

lsp-java mode should handle most of that: https://emacs-lsp.github.io/lsp-java/

Speed of Emacs on Java codebases can be faster than IDEA? With features of lsp-java ? How could it possible~~

I dunno about the netbeans LSP server but I use eclipse JDT language server from Emacs and it works pretty well https://github.com/emacs-lsp/lsp-java

According to lsp-java, variable lsp-java-format-settings-url specifies the url or file path to the eclipse formatter xml settings. This file eclipse-java-google-style.xml works fine in vscode and eclipse. The expected behavior is line longer than 100 is splited to a new line. In spacemacs, split length is still the default 120.

I see that I can configure DAP mode for a new server. This references "java", which I assume points it to dap-java.el within lsp-java.

You should check out emacs-lsp/lsp-java, it's exactly what you want.

Unfortunately I don't use snippets for the settings, but this must be configurable by the client LSP I've already seen people who can do this kind of thing with lsp-java, I wouldn't be surprised if you can also do it with lsp-python.