--- a/langtools/src/share/classes/com/sun/tools/javac/main/Main.java	Tue Jan 24 17:52:02 2012 +0000
+++ b/langtools/src/share/classes/com/sun/tools/javac/main/Main.java	Tue Jan 24 15:51:44 2012 -0800
@@ -31,6 +31,7 @@
 import java.net.URL;
 import java.security.DigestInputStream;
 import java.security.MessageDigest;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.LinkedHashSet;
 import java.util.Set;
@@ -208,6 +209,10 @@
      *  @param flags    The array of command line arguments.
      */
     public Collection<File> processArgs(String[] flags) { // XXX sb protected
+        return processArgs(flags, null);
+    }
+
+    public Collection<File> processArgs(String[] flags, String[] classNames) { // XXX sb protected
         int ac = 0;
         while (ac < flags.length) {
             String flag = flags[ac];
@@ -248,6 +253,10 @@
             }
         }
 
+        if (this.classnames != null && classNames != null) {
+            this.classnames.addAll(Arrays.asList(classNames));
+        }
+
         if (!checkDirectory(D))
             return null;
         if (!checkDirectory(S))
@@ -346,6 +355,15 @@
                        List<JavaFileObject> fileObjects,
                        Iterable<? extends Processor> processors)
     {
+        return compile(args,  null, context, fileObjects, processors);
+    }
+
+    public Result compile(String[] args,
+                       String[] classNames,
+                       Context context,
+                       List<JavaFileObject> fileObjects,
+                       Iterable<? extends Processor> processors)
+    {
         context.put(Log.outKey, out);
         log = Log.instance(context);
 
@@ -361,14 +379,16 @@
          * into account.
          */
         try {
-            if (args.length == 0 && fileObjects.isEmpty()) {
+            if (args.length == 0
+                    && (classNames == null || classNames.length == 0)
+                    && fileObjects.isEmpty()) {
                 Option.HELP.process(optionHelper, "-help");
                 return Result.CMDERR;
             }
 
             Collection<File> files;
             try {
-                files = processArgs(CommandLine.parse(args));
+                files = processArgs(CommandLine.parse(args), classNames);
                 if (files == null) {
                     // null signals an error in options, abort
                     return Result.CMDERR;