fix primitive class resolution to avoid mistaking normal classes with names like 'B' for primitive classes

classpath/java/lang/ClassLoader.java

@@ -9,7 +9,7 @@ public class ClassLoader {
     return instance;
   }
 
-  public Class loadClass(String name) {
+  public Class loadClass(String name) throws ClassNotFoundException {
     return Class.forName(name);
   }
 }