made new classes final.

git-svn-id: https://google-guice.googlecode.com/svn/trunk@1359 d779f126-a31b-0410-b53b-1d3aecad763e
diff --git a/core/src/com/google/inject/InjectorBuilder.java b/core/src/com/google/inject/InjectorBuilder.java
index 41753a0..b0f763f 100644
--- a/core/src/com/google/inject/InjectorBuilder.java
+++ b/core/src/com/google/inject/InjectorBuilder.java
@@ -38,7 +38,7 @@
  * 
  * @since 3.0
  */
-public class InjectorBuilder {
+public final class InjectorBuilder {
   
   private final InternalInjectorCreator creator = new InternalInjectorCreator();
   
diff --git a/core/src/com/google/inject/util/Jsr330.java b/core/src/com/google/inject/util/Jsr330.java
index 5e32a93..90e1af6 100644
--- a/core/src/com/google/inject/util/Jsr330.java
+++ b/core/src/com/google/inject/util/Jsr330.java
@@ -26,7 +26,7 @@
  * @author jessewilson@google.com (Jesse Wilson) 
  * @since 3.0
  */
-public class Jsr330 {
+public final class Jsr330 {
 
   private Jsr330() {}
 
diff --git a/extensions/assistedinject/src/com/google/inject/assistedinject/FactoryModuleBuilder.java b/extensions/assistedinject/src/com/google/inject/assistedinject/FactoryModuleBuilder.java
index 637f7ac..7fea1e1 100644
--- a/extensions/assistedinject/src/com/google/inject/assistedinject/FactoryModuleBuilder.java
+++ b/extensions/assistedinject/src/com/google/inject/assistedinject/FactoryModuleBuilder.java
@@ -181,7 +181,7 @@
  * @since 3.0
  * @author schmitt@google.com (Peter Schmitt)
  */
-public class FactoryModuleBuilder {
+public final class FactoryModuleBuilder {
 
   private final BindingCollector bindings = new BindingCollector();