SCJP題庫第114題
Given:
10. class line{
11. public class Point{public int x, y;}
12. public Point getPoint(){return new Point();}
13. }
14. class Triangle{
15. public Triangle(){
16. //insert code here
17. }
18. }
Which code, inserted at line 16, correctly retrieves a local instance of a Point object?
A. Point p = Line.getPoint();
B. Line.Point p = Line.getPoint();
C. Point p = (new Line()).getPoint();
D. Line.Point p = (new Line()).getPoint();
Ans: D
解說:
getPoint是物件成員，要存取這個物件成員要先建立Line物件
Point是在Line中定義，要存取須用Line.Point
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