Program to use Enumeration Named Constants in Java

//  Program to use Enumeration Named Constants.
enum Colour 
{
Red, Green, Blue, Black, White, Orange, Yellow
}
class EnumDemo1 
{
public static void main(String args[ ])
{
 Colour c1;
 c1 = Colour.Red;
 System.out.println("Value of c1: " + c1);
 c1 = Colour.Blue;
 if(c1 == Colour.Blue)
  System.out.println("c1 contains Blue.");
 switch(c1) 
 {
  case Red:
   System.out.println("c1 is red.");
   break;
  case Green:
   System.out.println("c1 is green.");
   break;
  case Blue:
   System.out.println("c1 is blue.");
   break;
  case Black:
   System.out.println("c1 is black.");
   break;
  case White:
   System.out.println("c1 is white.");
   break;
  case Orange:
   System.out.println("c1 is orange.");
   break;
  case Yellow:
   System.out.println("c1 is yellow.");
   break;
 }
}
}
 
Output:
Value of c1: Red
c1 contains Blue.
c1 is blue.