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eclipse-plugin interview questions

Top eclipse-plugin frequently asked interview questions

Install Marketplace plugin on Eclipse Juno

I downloaded the Eclipse Juno 4.2 classic bundle, and saw that Help > Marketplace... was not available. AFAIK, this is provided by the mpc plugin. On their website however, I didn't see a trace of how to install the mpc client for Juno.

How can I add the Marketplace Client to the classic Juno bundle?


Source: (StackOverflow)

Is there a good JSP editor for Eclipse? [closed]

I need a nice JSP editor plugin for Eclipse. What are my choices?


Source: (StackOverflow)

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How to open windows explorer on selected resource in Eclipse

I was looking for a small plugin for Eclipse that would allow to open windows explorer on currently selected resource from Package Explorer tree.

I know that Aptana Studio provides this functionality via context menu on the resource, but it has tons of other stuff that I am not interested to.

Are there other solutions?


Source: (StackOverflow)

How do I install Eclipse Marketplace in Eclipse Classic?

I'm running Eclipse 3.6.1 Classic, which does not come with the Eclipse Marketplace plugin by default. I've looked around the Eclipse website, but I don't see an available plugin for installing Eclipse Marketplace. Am I just not seeing it?


Source: (StackOverflow)

How to auto-remove trailing whitespace in Eclipse?

The question has two parts, one of which I already have the answer for.

  1. How to auto-remove trailing whitespace from the entire file being edited? -> Answer: use the AnyEdit plugin, which can be set to do that on any save to the file.
  2. How to auto-remove trailing whitespace only from the lines I changed? -> This I don't know and would appreciate any help.

Source: (StackOverflow)

Eclipse RCP - Open a View in the Editor Area (3.8/e4 hybrid)

I'm working on a 3.8-e4 hybrid (i.e we have the Luna dependencies, but we do not use the Application.e4xmi, yet). So we're basically running the compact layer.

With that being said, it would be nice to find an e4 programmatic way to stack these nasty views onto the editor folder.


1.) Problem

I want to place a generic view folder in the editor area, so that each view which is opened at runtime will be opened there.

View in editor folder

(pic stolen from this question)


2.1) Possible fix no.1: Using plugin.xml

Create a perspective extension, and add each possible view to that extension, with relationship stack over relative org.eclipse.ui.editorss. This is a bit inconvenient if you have too many views awating to be opened, and if the project scales quickly. I also noticed that wildcard view IDs do not work here.

SS of the plugin.xml with perspective extensions

If you find yourself the time to add each possible view to the perspective extension, that would work. Although, IF you open a view which is not added here (ie: opens in a different folder), then each subsequent opened view will be opened in the previous folder, and NOT in the editor area (inquire further explanation if you don't get it).


2.2) Possible fix no.2: Using code in the perspective factory

In the IPerspectiveFactory, we do have access to the IPageLayout, which happens to be org.eclipse.ui.internal.e4.compatibility.ModeledPageLayout (e4 stuff).

Now, this ModeledPageLayout implementation is reasonable, but also no documentation and weird public APIs. This one gives the possibility to stack a view over any other relative

modeledPageLayout.stackView("newView0", IPageLayout.ID_EDITOR_AREA);

This would be the programmatic version of 2.1. Also, the same problem appears here. If a view is opened somewhere else, the code above becomes useless.

Interesting enough, the stackView API does not support wildcards (while others such as addView do).


2.3) Possible fix no.3: Workarounds yaaay!

I have a lot of perspectives, and a lot of different folders in each one. Everything is precisely placed.

Since Eclipse offers the APIs to get all the view IDs from everywhere around the system, I want to do the following, per perspective: each view ID which wasn't added to a specific folder will be appended to the editor area (ie editor folder, editor stack).

This would be my last resort, unless someone offers a more convenient and timesaving solution.

Remember, an e4 programmatic alternative is more flexible!


3.) Related questions

These would be rendered deprecated for the e4 release.


4.) Related Bug on Eclipse's Bugzilla:

This recent bug opened by myself has an attachment with a small SSCCE. The steps to reproduce this are described in this comment, so I'm not going to copy-paste them here.


Source: (StackOverflow)

Lightweight SQL editor for Eclipse [closed]

Is there any simple SQL editor plugin for Eclipse?

By simple I mean, the editor does NOT connect to any DB, does syntax highlighting and preferably formatting sql is a bonus.


Source: (StackOverflow)

Eclipse JUNO doesn't start

When I launch Eclipse, it does not start.
An error appears and tells me to see the log file.
"See the log file: /Users/max/work/projects/.metadata/.log"

OS: MacOS 10.7.4
Eclipse: 4.2 Juno
ADT: 20

My old version of Eclipse starts without issue.

!SESSION 2012-07-03 16:22:48.261 -----------------------------------------------
eclipse.buildId=I20120608-1400
java.version=1.6.0_33
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=ru_RU
Framework arguments:  -product org.eclipse.epp.package.java.product -keyring /Users/max/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.java.product -keyring /Users/max/.eclipse_keyring -showlocation

!ENTRY org.eclipse.core.resources 2 10035 2012-07-03 16:22:50.101
!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.

!ENTRY org.eclipse.equinox.preferences 4 2 2012-07-03 16:22:56.457
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.equinox.preferences".
!STACK 0
java.lang.ExceptionInInitializerError
at org.eclipse.wb.internal.core.preferences.PreferenceInitializer.initializeDefaultPreferences(    PreferenceInitializer.java:50)
at org.eclipse.core.internal.preferences.PreferenceServiceRegistryHelper$1.run(PreferenceServiceRegistryHelper.java:300)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.preferences.PreferenceServiceRegistryHelper.runInitializer(PreferenceServiceRegistryHelper.java:303)
at org.eclipse.core.internal.preferences.PreferenceServiceRegistryHelper.applyRuntimeDefaults(PreferenceServiceRegistryHelper.java:131)
at org.eclipse.core.internal.preferences.PreferencesService.applyRuntimeDefaults(PreferencesService.java:368)
at org.eclipse.core.internal.preferences.DefaultPreferences.applyRuntimeDefaults(DefaultPreferences.java:166)
at org.eclipse.core.internal.preferences.DefaultPreferences.load(DefaultPreferences.java:237)
at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:410)
at org.eclipse.core.internal.preferences.EclipsePreferences.internalNode(EclipsePreferences.java:663)
at org.eclipse.core.internal.preferences.EclipsePreferences.node(EclipsePreferences.java:805)
at org.eclipse.core.internal.preferences.AbstractScope.getNode(AbstractScope.java:38)
at org.eclipse.core.runtime.preferences.DefaultScope.getNode(DefaultScope.java:76)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getDefaultPreferences(ScopedPreferenceStore.java:250)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getPreferenceNodes(ScopedPreferenceStore.java:285)
at org.eclipse.ui.preferences.ScopedPreferenceStore.internalGet(ScopedPreferenceStore.java:475)
at org.eclipse.ui.preferences.ScopedPreferenceStore.getBoolean(ScopedPreferenceStore.java:387)
at org.eclipse.wb.internal.core.editor.describer.JavaSourceUiDescriber.isGUISource(JavaSourceUiDescriber.java:65)
at org.eclipse.wb.internal.core.editor.describer.JavaSourceUiDescriber.describe(JavaSourceUiDescriber.java:52)
at org.eclipse.core.internal.content.ContentTypeCatalog.describe(ContentTypeCatalog.java:218)
at org.eclipse.core.internal.content.ContentTypeCatalog.collectMatchingByContents(ContentTypeCatalog.java:190)
at org.eclipse.core.internal.content.ContentTypeCatalog.internalFindContentTypesFor(ContentTypeCatalog.java:403)
at org.eclipse.core.internal.content.ContentTypeCatalog.internalFindContentTypesFor(ContentTypeCatalog.java:450)
at org.eclipse.core.internal.content.ContentTypeCatalog.getDescriptionFor(ContentTypeCatalog.java:346)
at org.eclipse.core.internal.content.ContentTypeCatalog.getDescriptionFor(ContentTypeCatalog.java:360)
at org.eclipse.core.internal.content.ContentTypeMatcher.getDescriptionFor(ContentTypeMatcher.java:86)
at org.eclipse.core.internal.resources.ContentDescriptionManager.readDescription(ContentDescriptionManager.java:445)
at org.eclipse.core.internal.resources.ContentDescriptionManager.getDescriptionFor(ContentDescriptionManager.java:355)
at org.eclipse.core.internal.resources.File.internalGetCharset(File.java:246)
at org.eclipse.core.internal.resources.File.getCharset(File.java:207)
at org.eclipse.core.internal.resources.File.getCharset(File.java:194)
at org.eclipse.jdt.internal.core.util.Util.getResourceContentsAsCharArray(Util.java:1156)
at org.eclipse.jdt.internal.core.builder.SourceFile.getContents(SourceFile.java:79)
at org.eclipse.jdt.internal.compiler.ReadManager.run(ReadManager.java:173)
at java.lang.Thread.run(Thread.java:680)
Caused by: org.eclipse.swt.SWTException: Invalid thread access
at org.eclipse.swt.SWT.error(SWT.java:4361)
at org.eclipse.swt.SWT.error(SWT.java:4276)
at org.eclipse.swt.SWT.error(SWT.java:4247)
at org.eclipse.swt.widgets.Display.error(Display.java:1068)
at org.eclipse.swt.widgets.Display.checkDevice(Display.java:621)
at org.eclipse.swt.graphics.Device.getSystemFont(Device.java:476)
at org.eclipse.jface.preference.PreferenceConverter.<clinit>(PreferenceConverter.java:84)
... 35 more

!ENTRY org.eclipse.osgi 4 0 2012-07-03 16:22:59.978
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.jface.preference.PreferenceConverter
at org.eclipse.ui.internal.themes.ThemeElementHelper.installFont(ThemeElementHelper.java:103)
at org.eclipse.ui.internal.themes.ThemeElementHelper.populateRegistry(ThemeElementHelper.java:59)
at org.eclipse.ui.internal.Workbench$27.runWithException(Workbench.java:1550)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3944)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3621)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2478)
at org.eclipse.ui.internal.Workbench.access$7(Workbench.java:2386)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:583)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:540)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)

!ENTRY org.eclipse.core.jobs 4 2 2012-07-03 16:23:05.824
!MESSAGE An internal error occurred during: "Android Library Update".
!STACK 0
java.lang.NullPointerException
at com.android.ide.eclipse.adt.AdtPlugin.getOutStream(AdtPlugin.java:1714)
at com.android.ide.eclipse.adt.internal.project.LibraryClasspathContainerInitializer.allocateLibraryContainer(LibraryClasspathContainerInitializer.java:264)
at com.android.ide.eclipse.adt.internal.project.LibraryClasspathContainerInitializer.updateProjects(LibraryClasspathContainerInitializer.java:81)
at com.android.ide.eclipse.adt.internal.sdk.Sdk$3$1.run(Sdk.java:1197)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY com.android.ide.eclipse.adt 4 0 2012-07-03 16:23:05.998
!MESSAGE parseSdkContent failed
!STACK 0
java.lang.NullPointerException
at com.android.ide.eclipse.adt.AdtPlugin.getDisplay(AdtPlugin.java:334)
at com.android.ide.eclipse.adt.AdtPlugin$7.run(AdtPlugin.java:1422)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.core.jobs 2 2 2012-07-03 16:23:06.504
!MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: com.android.ide.eclipse.adt.internal.sdk.Sdk$5

!ENTRY org.eclipse.core.jobs 2 2 2012-07-03 16:23:06.505
!MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: com.android.ide.eclipse.adt.internal.sdk.Sdk$5

Source: (StackOverflow)

Android Device Chooser -- device not showing up

I'm using Eclipse + ADT, and my physical device (listed below) is unlisted on Android Device Chooser. I have updated Eclipse and all of the Android packages. My phone is running Android OS 1.6, which corresponds to the target version listed in the Eclipse Project.

Also, the reason I decided to try testing on a real device is because the emulator doesn't seem to be working right anymore when I run my project. The emulator launches, but the program never does. Any ideas?

(using windows 7/t-mobile mytouch 3g)


Source: (StackOverflow)

How do I set the eclipse.ini -vm option?

I installed the Maven plugin for Eclipse, and then I got an error like below:

please make sure the -vm option in eclipse.ini is pointing to a JDK

How do I use the -vm option to point to my JDK in eclipse.ini?


Source: (StackOverflow)

Display Eclipse tabs on several lines

I'm using eclipse galileo. Is it possible to display the tabs of my open files on several lines instead of using the >> sign. I still want a unique window to view the code though.

If there is no such settings, do any plugin exists ?


Source: (StackOverflow)

Eclipse IDE: How to zoom in on text?

I want the same behaviour Firefox has, when you use the scroll button in the mouse to zoom in and out on the current view. Is there something like it for eclipse?


Source: (StackOverflow)

JavaScript Editor Plugin for Eclipse

Is there an Eclipse plugin available for JavaScript that allows for syntax checking and autosuggestions for .js files in Eclipse?


Source: (StackOverflow)

How to install Hibernate Tools in Eclipse?

What is the proper way to install Hibernate Tools in Eclipse as a plugin? The Hibernate site doesn't really give any instructions.

Looking at the Hibernate Tools binary HibernateTools-3.2.4.Beta1-R200810311334.zip, it appears that I can just unzip this in my eclipse directory. Do I just unzip it in my eclipse directory? This seems like a hacky was to install it.


Source: (StackOverflow)

Which is the best Maven Eclipse plugin? [closed]

There is two available Eclipse plugins for Maven :

m2eclipse seems to be the oldest but the more robust. Is there any key differences between the two ?

Which one should be chosen for a project starting today and why ?

UPDATE: m2eclipse is moving to eclipse.org and will be included in the Indigo release train (Eclipse 3.7). See m2e at Eclipse: What will this mean for you? and m2eclipse is moving to eclipse.org!. The accepted answer is thus even more correct.


Source: (StackOverflow)