Java shortcut in VSCode to open JavaDocs

to view the Java documentation in Visual Studio Code to you can do it by the following ways:

1. mouse hover elements which you want to lookup
2. after short version appears, press ctrl key twice (if you press ctrl key once, the long version documentation appears as long as you hold the ctrl key)

NOTE: if it didn't work you need to install the java extension path in your visual studio code which the extension id is: @id:vscjava.vscode-java-pack

If you would like to view documentation in a separate panel, there is an extension called Docs View. Simply set shortcuts for docsView.documentation.focus and workbench.action.togglePanel, position the cursor over the class, attribute or method and press the shortcut. Other useful commands are editor.action.showHover and editor.action.showDefinitionPreviewHover.

There is an extension calls

Docs View which show you the docs in separate vs code window

VS Code have such capability but you may need to set a keyboard shortcut first. First go to the configure page:

Search Show Definition Preview Hover, you will see it, and just set a shortcut whatever you want: