This package provides a
javadoc-lookup function for quickly looking
up Javadoc for any library from within Emacs, optionally integrating
with Maven. A browser is launched to view the documentation.
javadoc-lookup is not bound to any key by default, so you may want
to add this to your initialization file,
(global-set-key (kbd "C-h j") 'javadoc-lookup)
An index for the core Java classes (i.e. java.*) is provided built-in. Beyond this, you'll want to tell javadoc-lookup what else you would like to have indexed. There are two ways to do this. You can point it to the root of a library's documentation on your filesystem. For example (the first entry here will replace the built-in index),
(javadoc-add-roots "/usr/share/doc/openjdk-8-jdk/api" "~/src/project/doc")
Or, more conveniently, you can fetch and index documentation from
Maven! This is done by specifying an artifact as a sequence of three
[groupId artifactId version]. For example,
(javadoc-add-artifacts [org.lwjgl.lwjg lwjgl "2.8.2"] [com.nullprogram native-guide "0.2"] [org.apache.commons commons-math3 "3.0"])
This feature requires that you have Maven and the command-line unzip utility installed on your system. The initial fetch is slow but Emacs will operate from its own cache after that.
Two functions for managing Java imports is provided:
javadoc-sort-imports. The former integrates with the javadoc-lookup
index to provide completions.
This package obsoletes my previous java-docs package. Use this one instead.