[NETBEANS-2134] ClassCastException calling "Implement all abstract methods"

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 10.0
• Component/s: editor - Refactoring, java - Refactoring

Environment

Ubuntu 18.04
Netbeans is running on OpenJDK 11.0.1+13-Ubuntu-3ubuntu118.04ppa1
The Java platform for the project is OpenJDK 1.8.0_191-8u191-b12-2ubuntu0.18.04.1-b12

• Assignee: Unassigned
• Reporter: Aldo Brucale
• Created: 18/Feb/19 15:09
• Updated: 18/Feb/19 15:24

Description

Invoking the "Implement all abstract methods" hint action produces a ClassCastException when the type of the parameters of the methods to implement is not in the classpath.

Here is the stack trace:

java.lang.ClassCastException: class com.sun.tools.javac.code.Type$ClassType cannot be cast to class com.sun.tools.javac.code.Type$ErrorType (com.sun.tools.javac.code.Type$ClassType and com.sun.tools.javac.code.Type$ErrorType are in unnamed module of loader org.netbeans.StandardModule$OneModuleClassLoader @2fd0241)
at org.netbeans.modules.java.source.builder.TreeFactory.Type(TreeFactory.java:797)
at org.netbeans.api.java.source.TreeMaker.Type(TreeMaker.java:1083)
at org.netbeans.api.java.source.GeneratorUtilities.resolveWildcard(GeneratorUtilities.java:1784)
at org.netbeans.api.java.source.GeneratorUtilities.createMethod(GeneratorUtilities.java:818)
at org.netbeans.api.java.source.GeneratorUtilities.createMethod(GeneratorUtilities.java:1693)
at org.netbeans.api.java.source.GeneratorUtilities.createAbstractMethodImplementation(GeneratorUtilities.java:721)
at org.netbeans.api.java.source.GeneratorUtilities.createAbstractMethodImplementations(GeneratorUtilities.java:705)
at org.netbeans.modules.java.hints.errors.ImplementAllAbstractMethods.generateAllAbstractMethodImplementations(ImplementAllAbstractMethods.java:587)
at org.netbeans.modules.java.hints.errors.ImplementAllAbstractMethods$ImplementFixBase.generateImplementation(ImplementAllAbstractMethods.java:402)
at org.netbeans.modules.java.hints.errors.ImplementAllAbstractMethods$ImplementAbstractMethodsFix.executeRound(ImplementAllAbstractMethods.java:548)
at org.netbeans.modules.java.hints.errors.ImplementAllAbstractMethods$ImplementFixBase.run(ImplementAllAbstractMethods.java:363)
at org.netbeans.modules.java.hints.errors.ImplementAllAbstractMethods$ImplementFixBase.run(ImplementAllAbstractMethods.java:285)
at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:672)
at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:662)
at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:501)
at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:586)
at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:130)
at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:114)
at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:181)
at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:178)
at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:178)
at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:81)
at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:451)
at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:422)
at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:683)
at org.netbeans.modules.java.hints.errors.ImplementAllAbstractMethods$ImplementFixBase.implement(ImplementAllAbstractMethods.java:341)
[catch] at org.netbeans.modules.editor.hints.HintsUI$1.run(HintsUI.java:810)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)