Unable to open STS IDE - spring-boot

Question

Not sure what has happened with my system now, once I have reboot my windows laptop then after I am unable to open STS than.
It is showing error -
above log has following contain :
!SESSION 2017-05-14 21:00:11.181 ----------------------------------------------- eclipse.buildId=3.8.1.201607290850-RELEASE-e46 java.version=1.8.0_131
java.vendor=Oracle Corporation BootLoader constants: OS=win32,
ARCH=x86_64, WS=win32, NL=en_US Framework arguments: -product
org.springsource.sts.ide Command-line arguments: -os win32 -ws win32
-arch x86_64 -product org.springsource.sts.ide
!ENTRY org.eclipse.osgi 4 0 2017-05-14 21:00:14.019 !MESSAGE
Application error !STACK 1 java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method) at
java.util.Arrays.copyOfRange(Unknown Source) at
java.util.Arrays.copyOfRange(Unknown Source) at
org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.lambda$7(ChooseWorkspaceDialog.java:380)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown
Source) at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown
Source) at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.util.stream.ReferencePipeline.collect(Unknown Source) at
org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.createUniqueWorkspaceNameMap(ChooseWorkspaceDialog.java:382)
at
org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.createRecentWorkspacesComposite(ChooseWorkspaceDialog.java:325)
at
org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.createDialogArea(ChooseWorkspaceDialog.java:176)
at
org.eclipse.jface.dialogs.TitleAreaDialog.createContents(TitleAreaDialog.java:158)
at org.eclipse.jface.window.Window.create(Window.java:426) at
org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1095) at
org.eclipse.jface.window.Window.open(Window.java:783) at
org.eclipse.ui.internal.ide.ChooseWorkspaceDialog.prompt(ChooseWorkspaceDialog.java:114)
at
org.eclipse.ui.internal.ide.application.IDEApplication.promptForWorkspace(IDEApplication.java:342)
at
org.eclipse.ui.internal.ide.application.IDEApplication.checkInstanceLocation(IDEApplication.java:261)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:128)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at
java.lang.reflect.Method.invoke(Unknown Source) at
org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673) at
org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at
org.eclipse.equinox.launcher.Main.run(Main.java:1519)
Not sure now from where that ArrayIndecOutoFBound Exception is coming, I have googled the same but nothing solved out my problem.

Answer 1

Just find below file in your STS install configuration directory and delete it -
/configuration/.settings/org.eclipse.ui.ide.prefs Blockquote
beware now you guys would not get previous workspace suggestions like before as we have just deleted the one of the setting file from STS.
Hope this will help.