Java 利用枚举实现接口进行统一管理

public interface IPairs<K, V, C extends Enum> {
  /**
   * 返回枚举对象
   * */
  C get();
  /**
   * 返回枚举项的 key
   * */
  K key();
  /**
   * 返回枚举项的 value
   * */
  V value();
}

public enum StatusEnum implements IPairs<Integer, String, StatusEnum> {
  DISABLED(0, "record has been disabled"),
  ENABLED(1, "record has been enabled"),
  DELETES(9, "record has been deleted")
  ;
  private int code;
  private String desc;
  StatusEnum(int code, String desc) {
    this.code = code;
    this.desc = desc;
  }
  public StatusEnum get() {
    return this;
  }
  @Override
  public Integer key() {
    return this.code;
  }
  @Override
  public String value() {
    return this.desc;
  }
}

public enum ResponseEnum implements IPairs<Integer, String, ResponseEnum> {
  SUCCESS(10000, "success"),
  FAILED(10001, "failed")
  ;
  private int code;
  private String desc;
  ResponseEnum(int code, String desc) {
    this.code = code;
    this.desc = desc;
  }
  public ResponseEnum get() {
    return this;
  }
  @Override
  public Integer key() {
    return this.code;
  }
  @Override
  public String value() {
    return this.desc;
  }
}

public class AnswerApp {
  public static void main(String[] args) {
    invoke(StatusEnum.ENABLED);
    System.out.println();
    response(ResponseEnum.SUCCESS);
  }
  
  private static void response(IPairs pairs) {
    System.out.println(pairs.get() == ResponseEnum.SUCCESS);
    System.out.println(MessageFormat.format("key: {0}, value: {1}", pairs.key(), pairs.value()));
  }
  
  private static void invoke(IPairs pairs) {
    System.out.println(pairs.get() == StatusEnum.ENABLED);
    System.out.println(MessageFormat.format("key: {0}, value: {1}", pairs.key(), pairs.value()));
  }
}  

true
key: 1, value: record has been enabled
true
key: 10,000, value: success

```java
interface info{
  void show();
}
enum Season1 implements info{
  //用enum关键字后，首先要把类里面定义的对象提到最前面，将一些重复
  // 的前缀的去掉，每个对象之间要用逗号隔开，最后一个用分号
  //后面的就没有什么变化
   SPRING ("春天","春意暖暖"),
   SUMMER ("春天","春意暖暖"),
   AUTUMN ("春天","春意暖暖"),
   WINTER ("春天","春意暖暖");
  private final String seasonName;
  private final String seasonDeac;
  private Season1(String seasonName,String seasonDeac){
  this.seasonDeac = seasonDeac;
  this.seasonName = seasonName;
  }
  public String getSeasonDeac() {
    return seasonDeac;
  }
  public String getSeasonName() {
    return seasonName;
  }
  //注意这时候没有重写toString方法，即但是依然可以输出对象
  // 的内容。即enum类不是继承object类，而是默认继承
  //lang包下的enum类
  @Override
  public void show() {
    System.out.println("这是一个季节");
  }
}

```java
```java
/**
 * @author LYH_351147852@QQ.COM
 * @create 2019-10-05 21:39
 */
public class SeasonTest1 {
  public static void main(String[] args) {
    Season1[] values = Season1.values();
    for (int i = 0;i < values.length;i++){
      values[i].show();
    }
  }
}
interface info{
  void show();
}
enum Season1 implements info{
  //用enum关键字后，首先要把类里面定义的对象提到最前面，将一些重复
  // 的前缀的去掉，每个对象之间要用逗号隔开，最后一个用分号
  //后面的就没有什么变化
   SPRING ("春天","春意暖暖"){
    @Override
    public void show() {
      System.out.println("春天美好");
    }
  },
   SUMMER ("夏天","夏日炎炎"){
     @Override
     public void show() {
       System.out.println("夏天炎热");
     }
   },
   AUTUMN ("秋天","秋高气爽"){
     @Override
     public void show() {
       System.out.println("秋天寒冷");
     }
   },
   WINTER ("冬天","寒风呼啸"){
     @Override
     public void show() {
       System.out.println("寒风呼啸");
     }
   };
  private final String seasonName;
  private final String seasonDeac;
  private Season1(String seasonName,String seasonDeac){
  this.seasonDeac = seasonDeac;
  this.seasonName = seasonName;
  }
  public String getSeasonDeac() {
    return seasonDeac;
  }
  public String getSeasonName() {
    return seasonName;
  }
  //注意这时候没有重写toString方法，即但是依然可以输出对象
  // 的内容。即enum类不是继承object类，而是默认继承
  //lang包下的enum类
//  @Override
//  public void show() {
//    System.out.println("这是一个季节");
//  }
}