eclipse: Eclipse FAQ

Eclipse related

When you copy new files into an eclipse source directory, you may want to do the following 

1. Click on the project
2. Do a refresh using F5 or "right-click/refresh"
3. Do a rebuild on the project

To do a rebuild, you may have to turn off the build automatically option and then try rebuild

After rebuilding the project, you may want to turn back the automatic build option again

Often times, the file you have so painstakingly located and opened for edit is a read only file. To make the file writable you have to go to the file either in the navigator or the package exploer (if a java project) and then right click on it to see the properties.

It would be nice to go to the file properties with out going via the navigator.

Sometimes when you right click on the file in the edit window you will see a "show in package explorer". But this depends on which editor is used to open your file. If your file is opened using a text editor then you don't have this option.

For those editors that don't allow this option you can use the "menu/navigate/show in navigator". Or use the "alt-shift-w" and pick the option it presents to locate in the navigator

Now you can finally right click and go to properties to turn off the read only option

1. alt-shift-w to locate the file in navigator

2. Go to properties and turn off read only

The following directory structure is recommended 

your-root
   src
   dependent-jars
   jar-gen
   bin

"src" contains the java packages and source files.

"dependent-jars" contain any third party dependent jar files for compilation

"jar-gen" contains the description files for exporting your source and class files as jar files

"bin" is where you can allow eclipse to drop the binaries.

I want to replace tabs with empty spaces as I enter.

If I go to a java source file, I see that there are errors marked in that source files. But I don't see them propagating to the parent nodes. I have seen this behavior in websphere eclipse. Not sure if this is true with the native eclipse as well

The reason for this is you may be in a non java perspective while you were looking at the java file. For example I was in a server perspective. When I switched to the java perspective I can see the propagating errors.

Here is a link that has some notes on cvs

. You may also want to check out the O'Reilly's eclipse cookbook.

The above link is especially useful for figuring out the issues with cvsnt and eclipse, especially the version compatibility.

See the full story here

wsad, which is based on eclipse, trips up when target directoy contains already a webapp. Right thing to do is to create webapp project first via wsad and then copy your stuff there.

What is the link for finding plugins for eclipse?

Is there an XSLT plugin for Eclipse?

topmenu/window/preferences/java/compiler/compliance and classfiles/Compilercompliance level

Your projects can stay inside a workspace or outside a workspace. Either way your project root directory contains all the details needed to work in that project from any workspace.

When you import from a local file system into a workspace, you are directly working on that filesystem directory. No files will be copied to the workspace. It is more like establishing a link or a shortcut in your workspace.

How to do this kind of import 


1. File
2. Import ..
3. Existing project into workspace

In eclipse a workspace is a collection of projects. If you want to separate your projects based on a classification scheme, you can do so by creating new workspaces.

It is extreemely simple to create a new workspace for eclipse. Follow the following steps 


1. Create a new directory for your workspace
2. Copy the eclipse shortcut
3. Rename the short cut to your preference
4. To the shortcut specify your dir as a -data option

Example 


eclipse.exe -data c:\your-dir

See their news group. You need a password for this site

Also at

jdt site

Request a password

Information on 1.5 and 3.1 of eclipse

3.1 build notes

These are available on the 3.1 download page

It is using the windows profile space as the workspace. Previously this was the eclipse home directory. A good reason to specify your own work space.

eclipse 3.1 build details 

Highlight the interface or classname
right click
Open type hierarchy

shortcuts to eclipse

Sometimes you may want to debug into external jar files. You may have acquired the sources for the jar file separately from the binary jar. In such cases you can use the following process to indicate the sources to eclipse so that at debugging time you can step into the source files.

Look for the jar that you have source for in the "Referenced Libraries" underneath your project in the project explorer. Expand "Referenced Libraries" by opening the plus sign.

Click on the jar file and right click for properties. You will see an option called "Java Source Attachment". Specify the path or the jar file of the source here.

These steps may vary depending on the eclipse release. However bottomline is that you can attach source to an existing jar.

Occasionally though the source options for a jar are turned off as the jar file is indicated as immutable system library. In such cases you may want to drop or remove the jar file and that library and explicitly add it as a user library as if you are attaching that jar yourself and then proceed to attach source code to it.

Hope this helps.

How can I increase memory for java when running eclipse?

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Look here for a document


eclipse [normal arguments] -vmargs -Xmx256M [more VM args]

How can I find out what is installed on my eclipse

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FAQ How do I find out what plug-ins have been installed?

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Here is an answer


Eclipse IDE for Java Developers

Version: Helios Service Release 2
Build id: 20110301-1815
(c) Copyright Eclipse contributors and others 2000, 2011.  All rights reserved.
Visit http://eclipse.org/

This product includes software developed by the
Apache Software Foundation http://apache.org/

Then choose Installation Details to see a list of plugins and their versions

Where are the official FAQs

eclipse text editor wrapping text

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http://www.ahtik.com/blog/projects/eclipse-word-wrap/

Visit http://www.ahtik.com/blog/projects/eclipse-word-wrap/

That seem to work my friend