Enumeration in Java5

package enumjava5;

public enum Color {
    RED(255, 0, 0){
        public String getMood(){
            return "live";
        }
    },
    GREEN(0, 255, 0){
        public String getMood(){
            return "rest";
        }  
    
    },
    BLUE(0, 0, 255){
        public String getMood(){
            return "sleep";
        }
    };

    Integer red;
    Integer green;
    Integer blue;

    private Color(Integer red, Integer green, Integer blue){
        this.red = red;
        this.green = green;
        this.blue = blue;
    }

    public String getCode(){
        return red + ", " + green + ", " + blue;
    }

    public abstract String getMood();

    @Override
    public String toString(){
        return "Color #" + this.ordinal() +  ", " +  this.name();
    }
}

• Use keyword enum - public enum Color
• Constuctor is private.
• You can implements yours method: String getCode()
• You can implements yours abstract method: abstract String getMood()
• You can use heritage method: String name(), int ordinal(), <T>[] values(), <T> valueOf(String)

package enumjava5;

public class Main {

   public static void main(String[] args) {

       for (Color color : Color.values()) {

            System.out.println("name: " + color.name() + ", code: " + color.getCode() + ", mood: " + color.getMood() + ", asString: " + color.toString());
       }

    }
}

output:

name: RED, code: 255, 0, 0, mood: live, asString: Color #0, RED
name: GREEN, code: 0, 255, 0, mood: rest, asString: Color #1, GREEN
name: BLUE, code: 0, 0, 255, mood: sleep, asString: Color #2, BLUE

You can use inner enum:

package enumjava5;

public class Outter{
    
  public enum Color{
      RED, GREEN, BLUE;
  }

  public static void main(String[] args){
      for (Color m: Color.values()){
          System.out.println( m.name() );
      }
  }
}