How do I add the Java API documentation to Eclipse?

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To use offline Java API Documentation in Eclipse, you need to download it first. The link for Java docs are (last updated on 2013-10-21):

Java 6
Page: http://www.oracle.com/technetwork/java/javase/downloads/jdk-6u25-doc-download-355137.html
Direct: http://download.oracle.com/otn-pub/java/jdk/6u30-b12/jdk-6u30-apidocs.zip

Java 7
Page: http://www.oracle.com/technetwork/java/javase/documentation/java-se-7-doc-download-435117.html

Java 8
Page: http://www.oracle.com/technetwork/java/javase/documentation/jdk8-doc-downloads-2133158.html

Java 9
Page:http://www.oracle.com/technetwork/java/javase/documentation/jdk9-doc-downloads-3850606.html

  1. Extract the zip file in your local directory.
  2. From eclipse Window --> Preferences --> Java --> "Installed JREs" select available JRE (jre6: C:\Program Files (x86)\Java\jre6 for instance) and click Edit.
  3. Select all the “JRE System libraries” using Control+A.
  4. Click “Javadoc Location”
  5. Change “Javadoc location path:” from “http://download.oracle.com/javase/6/docs/api/” to “file:/E:/Java/docs/api/”.

It must work as it works for me. I don’t need Internet connection to view Java API Documentation in Eclipse anymore.

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