The Conditional Operator and the 'switch' Statement

10. Corrected Program

Answer:
The correct program fragment is given below.

Corrected Program

Here is the corrected program. It would be OK if you put a break after the statement in the default case, but it is not needed.

class Switcher
{
  public static void main ( String[] args )
  {
    char   color = 'Y' ;    
    String message = "Color is";
    
    switch ( color )
    {
    
      case 'R':
        message = message + " red" ;
        break;
                        
      case 'O':
        message = message + " orange" ;
        break;
                        
      case 'Y':
        message = message + " yellow" ;
        break;
                        
      case 'G':
        message = message + " green" ;
        break;
                        
      case 'B':
        message = message + " blue" ;
        break;
                        
      case 'V':
        message = message + " violet" ;
        break;
                        
      default:
        message = message + " unknown" ;
            
    }

  System.out.println ( message ) ;
  }
}

Often what you really want is for several characters to select a single case. This can be done using several case statements, followed by just one list of statements.

For example, here both 'y' and 'Y' select the same statement:

      case 'y':                        
      case 'Y':
        message = message + " yellow" ;
        break;

Question 10:
Mentally insert extra case statements into the program so that upper and lower case 
characters work for each color. (Or, even better: copy the program to an editor, fix it, and run it.)