--- old/src/java.desktop/share/classes/com/sun/media/sound/WaveExtensibleFileReader.java	2014-08-27 09:55:58.000000000 +0800
+++ new/src/java.desktop/share/classes/com/sun/media/sound/WaveExtensibleFileReader.java	2014-08-27 09:55:58.000000000 +0800
@@ -167,9 +167,9 @@
         for (int i = 0; i < allchannelnames.length; i++) {
             if ((channelmask & m) != 0L) {
                 if (i < channelnames.length) {
-                    sb.append(channelnames[i] + " ");
+                    sb.append(channelnames[i]).append(' ');
                 } else {
-                    sb.append(allchannelnames[i] + " ");
+                    sb.append(allchannelnames[i]).append(' ');
                 }
             }
             m *= 2L;