About Question com.enthuware.ets.scjp.v6.2.779 :

[ETS User]

Code: Select all

if  public int getLen(List al )
     {
	 if( al != null) return ( (String) al.get(0)).length();
	 else return 0;
     }

There could be a NPE if the given list has no elements.

[admin]

Actually, it will throw an IndexOutOfBoundsException if the given list has no elements. It will throw NPE if al is null.

However, both are irrelevant to the question.

HTH,
Paul.