[davenci]

i created a plugin and accessing the database it gives me ClassNotFound Exception even though i added the jar file in JavaBuild Path as external jar. give me a solution to get rid out of it. but when i try on a single java program it works.

[jsugrue]

You'll need to add it to the classpath section in Dependencies under plugin.xml
The typical Project Build Path settings won't work for a plugin

James

[davenci]

Hi James,
Thanks for your answer , please could you elobarate it. i am new to eclipse

[jsugrue]

Sorry,
What you'll need to do in steps:
- open the plugin.xml (or Manifest.MF if there is no plugin.xml) for your plugin
- navigate to the Runtime tab
- Add the jar to the classpath section (on the bottom right hand side)

If you need more info, let me know
James

[davenci]

Thanks James,
But still now i am getting the same error. Let me explain you the in detail.
1) Created a plugin project using wizard "Hello world"
1.1) i added the mysql.jar in runtime tab as you said.
2) Now i added the mysql.jar file in javabuild bath as external jar.
3) created a method for database connection check.
4) if i click the toolbar item in runtime. it gives me the error class not found.

[jsugrue]

That's a bit strange. Could you send me your plugin.xml file so I can take a closer look?

[davenci]

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.2"?>
<plugin>

<extension
point="org.eclipse.ui.commands">
<category
name="Sample Category"
id="com.tcs.tools.jpsentitygen.commands.category" >
</category>
<command
name="Sample Command"
categoryId="com.tcs.tools.jpsentitygen.commands.ca tegory"
id="com.tcs.tools.jpsentitygen.commands.sampleComm and">
</command>
</extension>
<extension
point="org.eclipse.ui.handlers">
<handler
commandId="com.tcs.tools.jpsentitygen.commands.sam pleCommand"
class="com.tcs.tools.jpaentitygen.handlers.SampleH andler">
</handler>
</extension>
<extension
point="org.eclipse.ui.bindings">
<key
commandId="com.tcs.tools.jpsentitygen.commands.sam pleCommand"
contextId="org.eclipse.ui.contexts.window"
sequence="M1+6"
schemeId="org.eclipse.ui.defaultAcceleratorConfigu ration">
</key>
</extension>
<extension
point="org.eclipse.ui.menus">
<menuContribution
locationURI="menurg.eclipse.ui.main.menu?after=a dditions">
<menu
label="Sample Menu"
mnemonic="M"
id="com.tcs.tools.jpsentitygen.menus.sampleMenu">
<command
commandId="com.tcs.tools.jpsentitygen.commands.sam pleCommand"
mnemonic="S"
id="com.tcs.tools.jpsentitygen.menus.sampleCommand ">
</command>
</menu>
</menuContribution>
<menuContribution
locationURI="toolbarrg.eclipse.ui.main.toolbar?a fter=additions">
<toolbar
id="com.tcs.tools.jpsentitygen.toolbars.sampleTool bar">
<command
commandId="com.tcs.tools.jpsentitygen.commands.sam pleCommand"
icon="icons/sample.gif"
tooltip="Say hello world"
id="com.tcs.tools.jpsentitygen.toolbars.sampleComm and">
</command>
</toolbar>
</menuContribution>
</extension>

</plugin>

[jsugrue]

Sorry - I meant to say Manifest.MF

You should have something like this in the manifest:

Bundle-ClassPath: lib/mysqlconnection.jar,

[davenci]

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: JPAEntityGen Plug-in
Bundle-SymbolicName: com.xyz.tools.jpsentitygen; singleton:=true
Bundle-Version: 1.0.0
Bundle-Activator: com.xyz.tools.jpaentitygen.JPAEntityGen
Bundle-Vendor: XYZ
Require-Bundle: org.eclipse.ui,
org.eclipse.core.runtime,
org.eclipse.ui.console,
org.eclipse.jface.text
Eclipse-LazyStart: true
Bundle-ClassPath: ojdbc14.jar,
mysql-connector-java-5.1.5.jar

[davenci]

Hai James, The Problem has beeen resolved
Thanks a lot.