Attach the Java Source Code

user_141810 0
Viewed 110862

I cannot for the life of me attach the java source code to eclipse so I can see the inner workings of the language. Not even something as simple as the String Class.

when I run java -version this is what I have:

java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode, sharing)

I am downloading the java souce from: http://download.java.net/jdk6/source/

And in eclipse when I attach it It says:

The JAR file "C:\Program Files\Java\jre6\jdk-6u14-fcs-src-b08-jrl-21_may_2009.jar" 
has no source attachment.

What am I doing wrong?

eclipse java
14 Answers

Normally, if you have installed the JDK6u14, eclipse should detect it and declare it automatically in its "installed JRE" list.

If not, you can add that JDK through "Windows/Preferences": Java > Installed JREs:

Just point to the root directory of your JDK installation: it should include the sources of the JDK (src.zip), automatically detected and attached to rt.jar by eclipse.

Add JRE VM, from pic.dhe.ibm.com/infocenter/iadthelp/v8r0/topic/org.eclipse.jdt.doc.user/tasks/images/task-add_jre_std_vm.PNG

VonC_63090

The easiest way to do this, is to install a JDK and tell Eclipse to use it as the default JRE. Use the default install.

(from memory)

Open Window -> Prefences. Select Installed Java runtimes, and choose Add. Navigate to root of your JDK (\Programs...\Java) and click Ok. Then select it to be the default JRE (checkmark).

After a workspace rebuild, you should have source attached to all JRE classes.

user_538970

Answer For Eclipse 2019 With ScreenShots

  • Step 1: Window -> Preferences -> Java -> Installed JREs

Installed JREs

  • Step 2: Select Currently used JRE, now Edit option will get enabled, Click on edit option

Currently used JRE option edit

  • Step 3: Select rt.jar from JRE systems library, click on corresponding drop down to expand

rt.jar

  • Step 4: Select Source attachment none, Click on Source Attachment Button, Source attachment configuration window will appear, Select external location

Source attachment external location

  • Step 5: Select src.zip file from jdk folder, say ok ok finish

src.zip

user_103470550

issue resolved here :

"Windows/Preferences": Java > Installed JREs:

then set/update JRE HOME : C:\Program Files\Java\jdk1.8.0_221\jre

should try this.

user_58894930
user_129465500
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