QUESTION 19

QUESTION 19
Given a method that must ensure that its parameter is not null: 
 
11. public void someMethod(Object value) { 
12. // check for null value ... 
20. System.out.println(value.getClass()); 
21. } 
 
What, inserted at line 12, is the appropriate way to handle a null value? 
 
A. assert value == null; 
B. assert value != null, "value is null"; 
C. if (value == null) { throw new AssertionException("value is null"); } 
D. if (value == null) { throw new IllegalArgumentException("value is null"); }
Solution : D