JDK26 behaves differently than JDK25 - "There were problems parsing"

What problem are you trying to solve?

Use OpenRewrite on JDK 26

Easy bug reporting to OpenRewrite and frictionless tool use.

Since years, dozens of files are not parseable by OpenRewrite on Windows.

Describe the solution you'd like

OpenRewrite can parse all Java files.

Have you considered any alternatives or workarounds?

Discuss java parsers with OpenRewrite team. java parser is maintained, but the current parsing logic is too heavy woven into a parser developed in parallel to javaparser.

Additional context

There were problems parsing jabgui\src\main\java\org\jabref\gui\autocompleter\AutoCompletionTextInputBinding.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\cleanup\CleanupJournalRelatedPanel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\collab\DatabaseChangeMonitor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\commonfxcontrols\CitationKeyPatternsPanel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\commonfxcontrols\CitationKeyPatternSuggestionCell.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\commonfxcontrols\FieldFormatterCleanupsPanel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\commonfxcontrols\SaveOrderConfigPanel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\consistency\ConsistencyCheckAction.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\consistency\ConsistencyCheckDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\consistency\ConsistencyCheckDialogViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\documentviewer\DocumentViewerView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\documentviewer\DocumentViewerViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\edit\automaticfiededitor\copyormovecontent\CopyOrMoveFieldContentTabView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\edit\automaticfiededitor\editfieldcontent\EditFieldContentTabView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\edit\automaticfiededitor\renamefield\RenameFieldTabView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\entryeditor\citationrelationtab\CitationRelationsTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\entryeditor\EntryEditor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\entryeditor\fileannotationtab\FulltextSearchResultsTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\entryeditor\SourceTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\exporter\ExportCommand.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\externalfiles\FileSelectionPage.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\externalfiles\UnlinkedFilesCellFactory.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\fieldeditors\DateEditor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\fieldeditors\KeywordsEditor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\fieldeditors\LinkedFilesEditor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\fieldeditors\LinkedFilesEditorViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\fieldeditors\TagsEditor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\frame\JabRefFrame.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\frame\JabRefFrameViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\FXDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\git\GitCommitDialogViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\git\GitShareToGitHubDialogViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\git\GitStatusViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\groups\GroupDialogViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\groups\GroupNodeViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\help\NewVersionDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\importer\ImportEntriesDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\JabRefDialogService.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\JabRefGUI.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\libraryproperties\constants\ConstantsPropertiesView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\libraryproperties\general\GeneralPropertiesView.jav
There were problems parsing jabgui\src\main\java\org\jabref\gui\LibraryTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\maintable\BibEntryTableViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\maintable\columns\FileColumn.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\maintable\MainTable.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\maintable\MainTableTooltip.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\mergeentries\MergeEntriesHelper.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\mergeentries\multiwaymerge\MultiMergeEntriesView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\newentry\NewEntryView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\newentry\NewEntryViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\Notifications.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\openoffice\OpenOfficePanel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\openoffice\StyleSelectDialogView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\ai\AiTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\ai\AiTabViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\autocompletion\AutoCompletionTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\customentrytypes\CustomEntryTypesTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\entry\EntryTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\general\GeneralTabViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\JabRefGuiPreferences.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\journals\JournalAbbreviationsTabViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\linkedfiles\LinkedFilesTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\PreferencesDialogView.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\preview\PreviewTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\preview\PreviewTabViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\websearch\ApiKeyDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\websearch\WebSearchTab.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preferences\websearch\WebSearchTabViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preview\PreviewPanel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\preview\PreviewViewer.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\search\GlobalSearchBar.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\specialfields\SpecialFieldAction.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\theme\ThemeManager.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\BaseDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\component\HelpButton.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\DelayedExecution.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\FieldsUtil.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\FileFilterConverter.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\MarkdownTextFlow.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\RecursiveChildrenListener.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\SelectableTextFlow.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\util\UiTaskExecutor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\declarative\sideeffect\SideEffectExecutor.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\declarative\Trigger.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\effects\BaseWindowEffect.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\effects\Ping.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\effects\Spotlight.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\utils\WalkthroughReverter.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\utils\WalkthroughScroller.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\utils\WalkthroughUtils.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\WalkthroughAction.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\WalkthroughHighlighter.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\WalkthroughRenderer.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\walkthrough\WindowOverlay.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\components\DonationProvider.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\components\PushToApplicationCell.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\components\Walkthroughs.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\quicksettings\OnlineServicesDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\quicksettings\PushApplicationDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\quicksettings\ThemeDialog.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\quicksettings\viewmodel\PushApplicationDialogViewModel.java
There were problems parsing jabgui\src\main\java\org\jabref\gui\welcome\WelcomeTab.java
There were problems parsing jabgui\src\main\java\org\jabref\migrations\PreferencesMigrations.java
There were problems parsing jabgui\src\test\java\org\jabref\gui\ai\components\aichat\AiChatComponentTest.java
There were problems parsing jablib\src\main\java\org\jabref\logic\ai\chatting\model\JabRefChatLanguageModel.java
There were problems parsing jablib\src\main\java\org\jabref\logic\ai\ingestion\LowLevelIngestor.java
There were problems parsing jablib\src\main\java\org\jabref\logic\ai\ingestion\model\JabRefEmbeddingModel.java
There were problems parsing jablib\src\main\java\org\jabref\logic\ai\summarization\GenerateSummaryForSeveralTask.java
There were problems parsing jablib\src\main\java\org\jabref\logic\ai\summarization\SummariesService.java
There were problems parsing jablib\src\main\java\org\jabref\logic\citation\SearchCitationsRelationsService.java
There were problems parsing jablib\src\main\java\org\jabref\logic\cleanup\DoiCleanup.java
There were problems parsing jablib\src\main\java\org\jabref\logic\cleanup\EprintCleanup.java
There were problems parsing jablib\src\main\java\org\jabref\logic\cleanup\FieldFormatterCleanupMapper.java
There were problems parsing jablib\src\main\java\org\jabref\logic\exporter\EndnoteXmlExporter.java
There were problems parsing jablib\src\main\java\org\jabref\logic\exporter\GroupSerializer.java
There were problems parsing jablib\src\main\java\org\jabref\logic\git\io\GitFileWriter.java
There were problems parsing jablib\src\main\java\org\jabref\logic\importer\fileformat\BibtexParser.java
There were problems parsing jablib\src\main\java\org\jabref\logic\importer\fileformat\ModsImporter.java
There were problems parsing jablib\src\main\java\org\jabref\logic\importer\fileformat\RisImporter.java
There were problems parsing jablib\src\main\java\org\jabref\logic\importer\WebFetchers.java
There were problems parsing jablib\src\main\java\org\jabref\logic\journals\ltwa\LtwaRepository.java
There were problems parsing jablib\src\main\java\org\jabref\logic\journals\ltwa\PrefixTree.java
There were problems parsing jablib\src\main\java\org\jabref\logic\openoffice\oocsltext\CSLReferenceMarkManager.java
There were problems parsing jablib\src\main\java\org\jabref\logic\preferences\JabRefCliPreferences.java
There were problems parsing jablib\src\main\java\org\jabref\logic\quality\consistency\BibliographyConsistencyCheck.java
There were problems parsing jablib\src\main\java\org\jabref\logic\search\indexing\DefaultLinkedFilesIndexer.java
There were problems parsing jablib\src\main\java\org\jabref\logic\search\IndexManager.java
There were problems parsing jablib\src\main\java\org\jabref\model\database\BibDatabase.java
There were problems parsing jablib\src\test\java\org\jabref\logic\citation\SearchCitationsRelationsServiceTest.java
There were problems parsing jablib\src\test\java\org\jabref\logic\crawler\StudyRepositoryTest.java
There were problems parsing jablib\src\test\java\org\jabref\logic\icore\ConferenceRepositoryTest.java
There were problems parsing jablib\src\test\java\org\jabref\logic\quality\consistency\BibliographyConsistencyCheckResultCsvWriterTest.java
There were problems parsing jablib\src\test\java\org\jabref\logic\quality\consistency\BibliographyConsistencyCheckResultTxtWriterTest.java
There were problems parsing jablib\src\test\java\org\jabref\logic\quality\consistency\BibliographyConsistencyCheckTest.java
There were problems parsing jabls\src\main\java\org\jabref\languageserver\LspLauncher.java
There were problems parsing jabls\src\main\java\org\jabref\languageserver\util\LspConsistencyCheck.java
There were problems parsing jabsrv\src\main\java\org\jabref\http\server\cayw\gui\CitationPropertiesPopup.java
There were problems parsing jabsrv\src\main\java\org\jabref\http\server\cayw\gui\SearchField.java

Are you interested in contributing this feature to OpenRewrite?

If I only had time...

Start by reproducing the JDK 26 versus JDK 25 behavior with OpenRewrite on Windows using the listed JabRef Java files, then inspect the parser failures. Compare the parsing results and errors across both JDK versions. Done means OpenRewrite can parse the affected Java files without reporting "There were problems parsing."