Bug 82326 [Dialogs] ClassCastException creating folder
Build: I20050104 1) Create a simple project called "a" 2) Create a simple file in the project called "b" 3) Open the "New Folder" wizard 4) For the parent name, enter "a/b" 5) For the folder name, enter "c" 6) Click finish. ClassCastException: java.lang.ClassCastException: org/eclipse/core/internal/resources/File incompatible with org/eclipse/core/resources/IContainer at org.eclipse.ui.dialogs.ContainerGenerator$1.run(ContainerGenerator.java:169) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1688) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1708) at org.eclipse.ui.dialogs.ContainerGenerator.generateContainer(ContainerGenerator.java:158) at org.eclipse.ui.dialogs.WizardNewFolderMainPage$3.execute(WizardNewFolderMainPage.java:292) at org.eclipse.ui.actions.WorkspaceModifyOperation$1.run(WorkspaceModifyOperation.java:98) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1688) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:110) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:111)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/misc/ResourceAndContainerGroup.java
.getString("ResourceGroup.nameExists"); 
            return false;
        }
        return true;
    }
    /**
     * Returns a <code>boolean</code> indicating whether the resource name rep-
     * resents a valid resource name in the workbench.  An error message is stored
     * for future reference if the name does not represent a valid resource name.
     *
     * @return <code>boolean</code> indicating validity of the resource name
     */
    protected boolean validateResourceName() {
        String resourceName = resourceNameField.getText();
        if (resourceName.equals("")) {
            problemType = PROBLEM_RESOURCE_EMPTY;
            problemMessage = IDEWorkbenchMessages.format(
                    "ResourceGroup.emptyName", new Object[] { resourceType }); 
            return false;
        }
        if (!(new Path("")).isValidSegment(resourceName)) { 
            problemType = PROBLEM_NAME_INVALID;
            problemMessage = IDEWorkbenchMessages
                    .format(
                            "ResourceGroup.invalidFilename", new String[] { resourceName }); 
            return false;
        }
        return true;
    }
}