newbie question: Can not call jar Member function because of missingattached source

[mike-yue]

My source code is like this:


import static org.math.io.files.BinaryFile.*;
....
float[] readthat = null;
readthat = readFloatArray(path, "LITTLE_ENDIAN");
....


readFloatArray() is one member function of class
org.math.io.files.BinaryFile. The container jmathio.jar is already in
the java build path. Using Ctrl+click, the source code of
readFloatArray() can be located and opened in Eclipse.
But, when the mouse is on function readFloatArray(), the warning note
is still there:
float[] org.math.io.files.BinaryFile.readFloatArray(File f, String
endian)
Note: This element neither has attached source nor attached Javadoc
and hence no Javadoc could be found.


In debug mode, when the function readFloatArray() was called, then I
got "Source not found" and asked me to "Edit Source Lookup Path...".
Is the source code not already included?

Any response would be appreciated.

 

[mike-yue]

It is not.

Generally when you set up a library in the IDE you have to configure its
source location as well as its class/JAR location.  Usually the source is in a
different place than the library itself.

Lew,

Thanks for the reply. The readFloatArray() seems disappeared but same
issue happened with other classes.

Here is the image of my current issue:
http://picasaweb.google.com/needpassion/Pictures?authkey=rQ0S1KvVwCc#5244930532018974802

The XYSeries.java and XYSeriesCollection.java belong to the same
package org.jfree.data.xy within jfreechart.jar(it is a GNU opensource
pack).
From the picture you can see the source is attached already. The jar
is already in the build path.
From the application TestFile.java using Ctrl+Click, the Eclipse IDE
can jump to the functions in XYSeries.java and XYSeriesCollection.java
without a problem. I believe that means the source code attached fine.

But in whatever runtime or debug, I always got error "Source not
found", and was asked to "Edit Source Lookup Path", but that did help
nothing.
I tried recreating the project, cleaning all, Refreshing, Validating,
no help.

I am new with Eclipse and Java. Sorry for bothing you maybe such a
simple question, but I've fighted this strange thing for two whole
days.

Any help would be appreciated.

 

[mike-yue]

Lew,

Thanks for the reply. The readFloatArray() seems disappeared but same
issue happened with other classes.

Here is the image of my current issue:http://picasaweb.google.com/needpassion/Pictures?authkey=rQ0S1KvVwCc#...

The XYSeries.java and XYSeriesCollection.java belong to the same
package org.jfree.data.xy within jfreechart.jar(it is a GNU opensource
pack).
From the picture you can see the source is attached already. The jar
is already in the build path.
From the application TestFile.java using Ctrl+Click, the Eclipse IDE
can jump to the functions in XYSeries.java and XYSeriesCollection.java
without a problem. I believe that means the source code attached fine.

But in whatever runtime or debug, I always got error "Source not
found", and was asked to "Edit Source Lookup Path", but that did help
nothing.
I tried recreating the project, cleaning all, Refreshing, Validating,
no help.

I am new with Eclipse and Java. Sorry for bothing you maybe such a
simple question, but I've fighted this strange thing for two whole
days.

Any help would be appreciated.

found the answer: The jar calls another jar which has no source
attached.
Thanks for all your attention.