diff -r 51fb17abfc32 -r ac36176b7de0 src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java
--- a/src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java	Tue Jan 24 17:52:02 2012 +0000
+++ b/src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java	Tue Jan 24 15:51:44 2012 -0800
@@ -70,6 +70,7 @@
     private JavaCompiler compiler;
     private Locale locale;
     private String[] args;
+    private String[] classNames;
     private Context context;
     private List<JavaFileObject> fileObjects;
     private Map<JavaFileObject, JCCompilationUnit> notYetEntered;
@@ -82,11 +83,13 @@
 
     JavacTaskImpl(Main compilerMain,
                 String[] args,
+                String[] classNames,
                 Context context,
                 List<JavaFileObject> fileObjects) {
         this.ccw = ClientCodeWrapper.instance(context);
         this.compilerMain = compilerMain;
         this.args = args;
+        this.classNames = classNames;
         this.context = context;
         this.fileObjects = fileObjects;
         setLocale(Locale.getDefault());
@@ -101,17 +104,14 @@
                 Context context,
                 Iterable<String> classes,
                 Iterable<? extends JavaFileObject> fileObjects) {
-        this(compilerMain, toArray(flags, classes), context, toList(fileObjects));
+        this(compilerMain, toArray(flags), toArray(classes), context, toList(fileObjects));
     }
 
-    static private String[] toArray(Iterable<String> flags, Iterable<String> classes) {
+    static private String[] toArray(Iterable<String> iter) {
         ListBuffer<String> result = new ListBuffer<String>();
-        if (flags != null)
-            for (String flag : flags)
-                result.append(flag);
-        if (classes != null)
-            for (String cls : classes)
-                result.append(cls);
+        if (iter != null)
+            for (String s : iter)
+                result.append(s);
         return result.toArray(new String[result.length()]);
     }
 
@@ -129,7 +129,7 @@
             initContext();
             notYetEntered = new HashMap<JavaFileObject, JCCompilationUnit>();
             compilerMain.setAPIMode(true);
-            result = compilerMain.compile(args, context, fileObjects, processors);
+            result = compilerMain.compile(args, classNames, context, fileObjects, processors);
             cleanup();
             return result.isOK();
         } else {
@@ -159,7 +159,7 @@
             initContext();
             compilerMain.setOptions(Options.instance(context));
             compilerMain.filenames = new LinkedHashSet<File>();
-            Collection<File> filenames = compilerMain.processArgs(CommandLine.parse(args));
+            Collection<File> filenames = compilerMain.processArgs(CommandLine.parse(args), classNames);
             if (!filenames.isEmpty())
                 throw new IllegalArgumentException("Malformed arguments " + toString(filenames, " "));
             compiler = JavaCompiler.instance(context);
@@ -174,6 +174,7 @@
             // endContext will be called when all classes have been generated
             // TODO: should handle the case after each phase if errors have occurred
             args = null;
+            classNames = null;
         }
     }
 
@@ -204,6 +205,7 @@
         compiler = null;
         compilerMain = null;
         args = null;
+        classNames = null;
         context = null;
         fileObjects = null;
         notYetEntered = null;