java.lang.NullPointerException: This exception has no message.

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Solutions on the web

via jabref by baonn
, 1 year ago
This exception has no message.
via Coderanch by subodh joshi, 10 months ago
via Coderanch by Taraka Ramesh Alamuri, 1 year ago
This exception has no message.
via Coderanch by lokesh rajarathanam, 11 months ago
This exception has no message.
via Coderanch by Srikanth Ganji, 10 months ago
via openxava by ftoliveira
, 1 year ago
This exception has no message.
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(
at net.sf.jabref.imports.CustomImportList$Importer.getInstance(
at net.sf.jabref.imports.ImportFormatReader.resetImportFormats(
at net.sf.jabref.imports.ImportCustomizationDialog.addOrReplaceImporter(
at net.sf.jabref.imports.ImportCustomizationDialog$1.actionPerformed(
at javax.swing.AbstractButton.fireActionPerformed(
at javax.swing.AbstractButton$Handler.actionPerformed(
at javax.swing.DefaultButtonModel.fireActionPerformed(
at javax.swing.DefaultButtonModel.setPressed(
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(
at java.awt.AWTEventMulticaster.mouseReleased(
at java.awt.Component.processMouseEvent(
at javax.swing.JComponent.processMouseEvent(
at java.awt.Component.processEvent(
at java.awt.Container.processEvent(
at java.awt.Component.dispatchEventImpl(
at java.awt.Container.dispatchEventImpl(
at java.awt.Component.dispatchEvent(
at java.awt.LightweightDispatcher.retargetMouseEvent(
at java.awt.LightweightDispatcher.processMouseEvent(
at java.awt.LightweightDispatcher.dispatchEvent(
at java.awt.Container.dispatchEventImpl(
at java.awt.Window.dispatchEventImpl(
at java.awt.Component.dispatchEvent(
at java.awt.EventQueue.dispatchEvent(
at java.awt.EventDispatchThread.pumpOneEventForFilters(
at java.awt.EventDispatchThread.pumpEventsForFilter(
at java.awt.EventDispatchThread.pumpEventsForHierarchy(
at java.awt.EventDispatchThread.pumpEvents(
at java.awt.EventDispatchThread.pumpEvents(

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