問題詳情

94.Given: 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);

參考答案