diff --git a/plugins/org.eclipse.xtext.util/src/org/eclipse/xtext/util/Strings.java b/plugins/org.eclipse.xtext.util/src/org/eclipse/xtext/util/Strings.java
index <HASH>..<HASH> 100644
--- a/plugins/org.eclipse.xtext.util/src/org/eclipse/xtext/util/Strings.java
+++ b/plugins/org.eclipse.xtext.util/src/org/eclipse/xtext/util/Strings.java
@@ -205,7 +205,7 @@ public class Strings {
 		if (bufLen < 0) {
 			bufLen = Integer.MAX_VALUE;
 		}
-		StringBuffer outBuffer = new StringBuffer(bufLen);
+		StringBuilder outBuffer = new StringBuilder(bufLen);
 
 		for (int x = 0; x < len; x++) {
 			char aChar = theString.charAt(x);
Added file header and class annotations options to Xtext generator (bug <I>)

Change-Id: I<I>ac5dfd<I>ce<I>da<I>a<I>e