試題詳解

 11. public class Rainbow { 

12. public enum MyColor { 

13. RED(0xff0000), GREEN(0x00ff00), BLUE(0x0000ff)； 

14. private final int rgb； 

15. MyColor(int rgb){this.rgb = rgb；} 

16. public int getRGB(){return rgb；}

 17. } 

18. public static void main(String[] args){ 

19. //insert code here 

20. } 

21. } 

Which code fragment inserted at line 19, allows the Rainbow class to compile?
(A) MyColor skyColor = BLUE；
(B) MyColor treeColor = MyColor.GREEN；
(C) if(RED.getRGB() ＜ BLUE.getRGB()){}
(D) Compilation fails due to other error(s) in the code.
(E) MyColor purple = new MyColor(0xff00ff)；