diff --git a/cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxReflectionHelper.java b/cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxReflectionHelper.java
index 8a76e2f..a768d35 100644
--- a/cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxReflectionHelper.java
+++ b/cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxReflectionHelper.java
@@ -31,14 +31,14 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
 public class Cocos2dxReflectionHelper {
-    public static <T> T getConstantValue(final Class aClass, final String constantName) {
+    public static <T> T getConstantValue(final Class<?> aClass, final String constantName) {
         try {
             return (T)aClass.getDeclaredField(constantName).get(null);
         } catch (NoSuchFieldException e) {
             Log.e("error", "can not find " + constantName + " in " + aClass.getName());
         }
         catch (IllegalAccessException e) {
-            Log.e("error", constantName + " is not accessable");
+            Log.e("error", constantName + " is not accessible");
         }
         catch (IllegalArgumentException e) {
             Log.e("error", "arguments error when get " + constantName);
@@ -50,13 +50,13 @@ public class Cocos2dxReflectionHelper {
         return null;
     }
 
-    public static <T> T invokeInstanceMethod(final Object instance, final String methodName,
-                                             final Class[] parameterTypes, final Object[] parameters) {
+    public static <T> void invokeInstanceMethod(final Object instance, final String methodName,
+                                                final Class<?>[] parameterTypes, final Object[] parameters) {
 
-        final Class aClass = instance.getClass();
+        final Class<?> aClass = instance.getClass();
         try {
             final Method method = aClass.getMethod(methodName, parameterTypes);
-            return (T)method.invoke(instance, parameters);
+            method.invoke(instance, parameters);
         } catch (NoSuchMethodException e) {
             Log.e("error", "can not find " + methodName + " in " + aClass.getName());
         }
@@ -70,6 +70,5 @@ public class Cocos2dxReflectionHelper {
             Log.e("error", "an exception was thrown by the invoked method when invoking " + methodName);
         }
 
-        return null;
     }
 }