Bug 29416 Cannot create Type if typecomment Template doesn't exist
Actual: Click on File/New/Interface (or Class). Type a name, and click Finish. Error dialog appears telling me to look in the log (stack trace below). Interface/Class file is created, but is completely empty. If I go to Preferences and create the "typecomment" template, this problem goes away Expected: Class/Interface should be created and the file populated properly, despite the absence of the typecomment template. Looks easy to fix, I just don't have the code handy, nor thetime to do it (sorry). The relevant portion of the stack trace: Caused by: java.lang.NullPointerException at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.isValidComment(NewTypeWizardPage.java:1543) at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.getTypeComment(NewTypeWizardPage.java:1566) at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.constructTypeStub(NewTypeWizardPage.java:1462) at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createType(NewTypeWizardPage.java:1345) at org.eclipse.jdt.internal.ui.wizards.NewInterfaceCreationWizard.finishPage(NewInterfaceCreationWizard.java:45) at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$2.run(NewElementWizard.java:79) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:34) at org.eclipse.jdt.internal.core.JavaModelOperation.execute(JavaModelOperation.java:326) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:626) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1564) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:2571) at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:32) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:296)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
/**
	 * Hook mathod that gets called from <code>createType</code> to retrieve 
	 * a file comment. This default implementation returns the content of the 
	 * 'filecomment' template.
	 * 
	 * @return the file comment or <code>null</code> if a file comment 
	 * is not desired
	 */		
	protected String getFileComment(ICompilationUnit parentCU) {
		if (PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.CODEGEN__FILE_COMMENTS)) {
			String template= getTemplate("filecomment", parentCU, 0); 
			if (isValidComment(template)) {
				return template;
			}			
		}
		return null;
	}
	
	private boolean isValidComment(String template) {
		IScanner scanner= ToolFactory.createScanner(true, false, false, false);
		scanner.setSource(template.toCharArray());
		try {
			int next= scanner.getNextToken();
			while (next == ITerminalSymbols.TokenNameCOMMENT_LINE || next == ITerminalSymbols.TokenNameCOMMENT_JAVADOC || next == ITerminalSymbols.TokenNameCOMMENT_BLOCK) {
				next= scanner.getNextToken();
			}
			return next == ITerminalSymbols.TokenNameEOF;
		} catch (InvalidInputException e) {
		}
		return false;