Switching on Enum and Adding Methods to an Enum

  

/*
License for Java 1.5 'Tiger': A Developer's Notebook
     (O'Reilly) example package

Java 1.5 'Tiger': A Developer's Notebook (O'Reilly) 
by Brett McLaughlin and David Flanagan.
ISBN: 0-596-00738-8

You can use the examples and the source code any way you want, but
please include a reference to where it comes from if you use it in
your own products or services. Also note that this software is
provided by the author "as is", with no expressed or implied warranties. 
In no event shall the author be liable for any direct or indirect
damages arising in any way out of the use of this software.
*/

//Implementing Interfaces with Enums
enum GuitarFeatures implements Features {

  ROSEWOOD(0),        // back/sides
  MAHOGANY(0),        // back/sides
  ZIRICOTE(300),      // back/sides

  SPRUCE(0),          // top
  CEDAR(0),           // top

  AB_ROSETTE(75),     // abalone rosette
  AB_TOP_BORDER(400), // abalone top border

  IL_DIAMONDS(150),   // diamond/square inlay
  IL_DOTS(0);         // dots inlays

  /** The upcharge for the feature */
  private float upcharge;

  GuitarFeatures(float upcharge) {
    this.upcharge = upcharge;
  }

  public float getUpcharge() {
    return upcharge;
  }

  public String getDescription() {
    switch(this) {
      case ROSEWOOD:      return "Rosewood back and sides";
      case MAHOGANY:      return "Mahogany back and sides";
      case ZIRICOTE:      return "Ziricote back and sides";
      case SPRUCE:        return "Sitka Spruce top";
      case CEDAR:         return "Wester Red Cedar top";
      case AB_ROSETTE:    return "Abalone rosette";
      case AB_TOP_BORDER: return "Abalone top border";
      case IL_DIAMONDS:   
        return "Diamonds and squares fretboard inlay";
      case IL_DOTS:
        return "Small dots fretboard inlay";
      default: return "Unknown feature";
    }
  }
}

interface Features {

  /** Get the upcharge for this feature */
  public float getUpcharge();

  /** Get the description for this feature */
  public String getDescription();

}

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7.	Use the built-in enumeration methods.
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9.	Java enum: Demonstrate ordinal(), compareTo(), and equals().
10.	Java enum: Creating an Enum
11.	Java enum: EnumMap and Ant status
12.	Java enum: Enum inside class
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14.	This program demonstrates enumerated types
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Switching on Enum and Adding Methods to an Enum : Enum « Language Basics « Java

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