Enum doubt

[Divya Gehlot]

Can any one explain me why my given answer is in correct as I typed same code in eclipse its showing lot of errors so only I am posting it here.

 10. public class Fabric
11. public enum Color {
12. RED(0xff0000), GREEN(0x00ff00), BLUE(0x0000ff);
13. private final int rgb;
14. Color( int rgb) { this.rgb = rgb; }
15. public int getRGB() { return rgb; }
16. };
17. public static void main( String[] argv) {
18. // insert code here
19. }
20. }
 
Which two code fragments, inserted independently at line 18, allow the Fabric class to compile? (Choose two.)
A. Color skyColor = BLUE;
B. Color treeColor = Color.GREEN;
C. Color purple = new Color( 0xff00ff);
D. if( RED.getRGB() < BLUE.getRGB() ) {}
E. Color purple = Color.BLUE + Color.RED;
F. if( Color.RED.ordinal() < Color.BLUE.ordinal() ) {}
Your Given Answer
 
B. Color treeColor = Color.GREEN;
E. Color purple = Color.BLUE + Color.RED;
  

[Burkhard Hassel]

Howdy Divya,

your Fabric class doesn't start with a {


The fact, that for example
Color skyColor = BLUE;
does not compile is because the main method belongs to the outer class Fabric and not to the enum class.


Bu.

[Divya Gehlot]

I want to know what will be the possible the above program.

[Anonymous]

Hello Divya,

How could option E an answer. Operator + is overloaded only for String objects and wrapper objects but not for enum. How could you get "E" as an answer. I feel the second answer is "F" as ordinal() is a public method available in Enum class and it is inherited by all enums declared.