單項(xiàng)選擇題

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”);

微信掃碼免費(fèi)搜題