I created a new class.
In the body of the main method I fill

Integer myNumber = 10;
String className = myNumber.getC| and ask for code completion.
NetBeans propose getClass() Class<Object> and it displays in the javadoc the
following:
public final native Class<Object> getClass();

But it's not correct.

the getClass() method for a Integer is in fact returning a Class<? extends Integer>.
And the javadoc of the getClass member would display
public final native Class<Integer> getClass();
or at least 
public final native Class<? extends Object> getClass();

Also, if I write
Integer.cl| , the code completion propose

class     Class

I think it would be
class     Class<Integer>

just my 2 cents.