Java中Enum方法toString与ordinal方法

public enum Language {
     C, Java, PHP;
}

public class EnumDemo {

    public static void main(String args[]) {
           
         // returns the name of this enum constant（String）
         System.out.println("Programming in " + Language.C.toString());       
         System.out.println("Programming in " + Language.Java.toString());  
         System.out.println("Programming in " + Language.PHP.toString());  
         // returns the ordinal of this enum constant，start with 0 （int）
         System.out.println("Programming in " + Language.C.ordinal());       
         System.out.println("Programming in " + Language.Java.ordinal());  
         System.out.println("Programming in " + Language.PHP.ordinal());  
       }


}