Formatting Source Code programmatically with JDT

Question

I am generating some classes with JDT. Afterwards I would like to format the whole ICompilationUnit, just as if I pressed Ctrl+Shift+F (Source > Format) in an open Editor wi

Answer 1

I use the following method to format a Java Source file

    public static void formatSource(ICompilationUnit cu, IProgressMonitor progressMonitor) throws JavaModelException{
    String source = cu.getSource();
    IJavaProject javaProject = cu.getJavaProject();

    Map options = javaProject.getOptions(true);


            // Instantiate the default code formatter with the given options
            final CodeFormatter codeFormatter = ToolFactory.createCodeFormatter(options);


            final TextEdit edit = codeFormatter.format(
                CodeFormatter.K_COMPILATION_UNIT, // format a compilation unit
                source, // source to format
                0, // starting position
                source.length(), // length
                0, // initial indentation
                System.getProperty("line.separator") // line separator
            );          

            cu.becomeWorkingCopy(progressMonitor);
            try {
                cu.applyTextEdit(edit, progressMonitor);
                //cu.reconcile();
                cu.commitWorkingCopy(true, progressMonitor);
                //cu.save(progressMonitor, false);

                JavaUI.openInEditor(cu);


            } catch (MalformedTreeException e) {
                e.printStackTrace();
            } catch (PartInitException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }   

}