I just know how to read Javadoc online on a website, but I want to download it for offline reading when no network is available.
How can I download the documentation?
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javadoc
F.ex. http://docs.oracle.com/javase/7/docs/ has a link to download "JDK 7 Documentation" in the sidebar under "Downloads". I'd expect the same for other versions.
Navigate to http://www.oracle.com/technetwork/java/javase/downloads/index.html
Under Addition Resources and Under Java SE 8 Documentation
Click Download button
Under Java SE Development Kit 8 Documentation > Java SE Development Kit 8u77 Documentation
Accept the License Agreement and click on the download zip file
Unzip the downloaded file Start the API docs from jdk-8u77-docs-all\docs\api\index.html
Navigate to http://docs.oracle.com/javase/
From Release dropdown select either of Java SE 7/6/5
In corresponding JAVA SE page and under Downloads left side menu Click JDK 7/6/5 Documentation or Java SE Documentation
Now in next page select the appropriate Java SE Development Kit 7uXX Documentation.
Accept License Agreement and click on Download zip file
Unzip the file and Start the API docs from
jdk-7uXX-docs-all\docs\api\index.html
By the way, a history of Java SE versions.
update 2019-09-29: Java version 11
The technique below does not now work with Java 11, and probably higher versions: there is no way of ignoring multiple "broken links" (i.e. to other classes, other APIs). Solution: keep your javadoc executable file (or javadoc.exe) from Java version 8
There are good reasons for making your own local javadocs, and it's not particularly difficult!
First you need the source. At the time of writing the Java 8 JDK comes with a zip file called src.zip. Sometimes, for unexplained reasons, Oracle don't always include the source. So for some older versions (and who knows about the future) you have to get hold of the Java source in another way. It's worth also being aware that, in the past, Oracle have sometimes included the source with the Linux version of the JDK, but not with the Windows one.
I just unzipped this file... the top directories are "com", "java", "javax", "launcher" and "org". Directory launcher contains no files to document.
You can generate the javadocs very very simply from any or all of these by CD'ing at the command prompt/terminal to the directory ...\src. Then go
javadoc -d docs -Xmaxwarns 10 -Xmaxerrs 10 -Xdoclint:none -sourcepath . -subpackages java:javax:org:com
NB note that there is a "." after -sourcepath
Simple as that. Generating your own javadocs also has 2 huge advantages
NB Swing is semi-officially DEAD. We should all be switching to JavaFX, which is helpfully bundled with Java 8 JDK, but in its own source file, javafx-src.zip.
Unzipped, this reveals 3 "root" packages: com, javafx and netscape (wha'?). These should be manually moved over the to appropriate places under the unzipped src directory (including the JavaFX com.sun packages under the Java com.sun strcture). Compiling all these Javadoc files took my machine a non-negligible time. I'd expect to see all the JavaFX source classes in with all the other source classes some time soon.
BTW, the same thinking applies to documenting any and all Java jars (with source) which you use. However, all versions of most jars will be found with their documentation available for download at Maven Central http://search.maven.org...
PS afterthought:
using Eclipse and the "Gradle STS" plugin: the "New Gradle STS Project" wizard will create a gradle.build file containing the line
include plugin: 'eclipse'
This magically downloads the source jar with the executable jar (under GRADLE_HOME) when you go
./gradlew build
[addendum 2020-01-13: if you have chosen not to include the Eclipse plugin in your build.gradle, it would appear that you can go (with the selection on your project in the Project Explorer) Right-click Gradle --> Refresh Gradle Project to get Eclipse to download the source files.]
... giving you an extra degree of certainty that you have got the right src and therefore the right javadoc for the dependency in question.
JAVA Fax Api documentation
You could download the mac 2.2 preview release from here and unzip it.
http://www.oracle.com/technetwork/java/javafx/downloads/devpreview-1429449.html
The javadoc won't quite match 2.1, but it will be close and if you use the preview instead, it will match exactly.
I think this would help you :)
You can use something called Dash: Offline API Documentation for Mac. For Windows and Linux you have an alternative called Zeal.
Both of them are very similar. And you can get offline documentation for most of the APIs out there like Java, android, Angular, HTML5 etc .. almost everything.
I have also written a post on How to install Zeal on Ubuntu 14.04
For any javadoc (not just the ones available for download) you can use the DownThemAll addon for Firefox with a suitable renaming mask, for example:
*subdirs*/*name*.*ext*
https://addons.mozilla.org/en-us/firefox/addon/downthemall/
https://www.downthemall.org/main/install-it/downthemall-3-0-7/
Edit: It's possible to use some older versions of the DownThemAll add-on with Pale Moon browser.
I use javadoc packaged by Allimant since I was in college.
http://www.allimant.org/javadoc/
The javadoc is in the CHM format (standard windows help format), so it's the best viewed when you're using windows.
Source: Stackoverflow.com