java枚举类的构造函数实例详解

enum AccountType
{
  SAVING, FIXED, CURRENT;
  private AccountType()
  {
    System.out.println(“It is a account type”);
  }
}
class EnumOne
{
  public static void main(String[]args)
  {
    System.out.println(AccountType.FIXED);
  }
}

It is a account type
It is a account type
It is a account type
FIXED

public class Test {

  public static void main(String[] args) {

    weekday mon = weekday.mon;
    weekday tue = weekday.tue;
    weekday thus = weekday.thus;
    weekday fri = weekday.fri;

  }

  public enum weekday {
    mon(), tue(2), wes(3), thus(), fri;
    private weekday() {
      System.out.println("no args");
    }

    private weekday(int i) {
      System.out.println("have args " + i);
    };
  }
}

no args
have args 2
have args 3
no args
no args