深入学习java枚举的应用

public class Common {
  public static final String SPRING="春";
  public static final String SEASON="夏";
  public static final String SUMMER="秋";
  public static final String AUTUMN="冬";
}

  public enum Season {
    SPRING("春"),
    SUMMER("夏"),
    AUTUMN("秋"),
    WINTER("冬");
  .....
}

//我们把枚举当做一个普通类
public enum Season {
  SPRING(1,"春"),
  SUMMER(2,"夏" ),
  AUTUMN(3,"秋" ),
  WINTER(4,"冬"); //这里最后一个一定要分号，否则报错
  
  /*我们可以理解成
   *public static final Season SPRING = new Season(1,春); 
   *public static final Season SUMMER = new Season(2,夏); 
   *public static final Season AUTUMN = new Season(3,秋); 
   *public static final Season WINTER = new Season(4,冬); 
   *既然是对象，那下面就很好理解了
   */  
  /*
   * 1.上面对象里放了两个参数，那下面就肯定要有这个类型的构造函数
   * 2.这里是private，因为不能在被new对象了
   */
  private Season(int code,String name) {
    this.name = name;
    this.code = code;
  }
  //对象的属性
  private String name;
  private int code;
  //获取对象属性的方法
  public String getName() {
    return this.name;
  }
  public String getCode() {
    return this.name;
  }
  //通过code获得对象，我们就可以获得对象的其它属性
  public static Season decode(int code) {
    Season season = null;
    for (Season type : Season.values()) {
      if (type.code==code) {
        season = type;
        break;
      }
    }
    return season;
  }
  //重新toString方法
  public String toString() {
    return this.name;
  }
}

public enum Common {
  INSERT,
  MODIFY,
  DELETE
}
//因为这里是无参的对象，所以可以用系统默认的构造函数。也不用写属性和方法。

public class CommonUtils {

  public static void getType(Common common){
    Common c=common;
    switch(c)
    {
    case INSERT:
      System.out.println("进行插入操作");
      break;
    case MODIFY:
      System.out.println("进行修改操作");
      break;
    case DELETE:
      System.out.println("进行删除操作");
      break;
    }  
    
  }
  public static void main(String[] args) {
    getType(Common.DELETE); //后台输出：进行删除操作
  }
}

public enum Season {
  SPRING(1,"春","春天放风筝"),
  SUMMER(2,"夏","夏天去游泳"),
  AUTUMN(3,"秋","秋天去秋游"),
  WINTER(4,"冬","冬天吃火锅"); 
  
  private Season(int code,String name,String bz) {
    this.code = code;
    this.name = name;
    this.bz=bz;
  }
  private int code;
  private String name;
  private String bz;
  public static Season decode(int code) {
    Season season = null;
    for (Season type : Season.values()) {
      if (type.code==code) {
        season = type;
        break;
      }
    }
    return season;
  }
  public int getCode() {
    return code;
  }
  public String getName() {
    return name;
  }
  public String getBz() {
    return bz;
  }

}