I use
if (clazz.getSuperclass().getName() == "java.lang.Object")
Is there a better way?
views:
87answers:
2
+7
A:
if ( clazz.getSuperclass( ) == Object.class )
There are 2 problems with your original implementation:
getSuperclassmay returnnulland you get NPE when you call getName- You use identity equality with a String (
==instead ofequals). Strangely enough it may work in this case as"java.lang.Object"string is probably internalized.
Alexander Pogrebnyak
2010-05-31 21:44:50
+3
A:
How about
if (clazz.getSuperclass().equals(java.lang.Object.class))
Péter Török
2010-05-31 21:45:15
This may throw NPE if clazz is primitive or `java.lang.Object`. Probably `Object.class.equals( clazz.getSuperclass( ) )` is more robust. Also `java.lang.Class` is one of the classes where it's OK to use identity compare.
Alexander Pogrebnyak
2010-05-31 21:51:20
@Alexander, good point, thanks. I was not _quite_ sure about the identity compare, so I used `equals` - thus getting myself bitten in the other leg :-)
Péter Török
2010-06-01 05:25:27