SCJP題庫第035題

10. public class Hello{

11.   String title;

12.   int value;

13.   public Hello(){

14.     title += " World";

15.   }

16.   public Hello(int value){

17.     this.value = value;

18.     title = "Hello";

19.     Hello();

20.   }

21. }

and:

30. Hello c = new Hello(5);

31. System.out.print(c.title);

What is the result?

A. Hello

B. Hello World

C. Compilation fails.

D. Hello World 5

E. The code runs with no output.

F. An exception is thrown at runtime.

Ans:C

解說:

對本身建構子的呼叫寫法為this(), 另外，

若有本身建構子的呼叫或對父類別建構子的呼叫，這二種呼叫必須出現在首行