java枚举enum的用法(与在switch中的用法)

/**
 * 操作码类
 * @author kokJuis
 * @version 1.0
 * @date 2017-3-6
 */
public enum Code {
 
 SUCCESS(10000, "操作成功"), 
 FAIL(10001, "操作失败"), 
 
 
 private int code;
 private String msg;
 
 //为了更好的返回代号和说明，必须呀重写构造方法
 private Code(int code, String msg) {
 this.code = code;
 this.msg = msg;
 }
 
 public int getCode() {
 return code;
 }
 
 public void setCode(int code) {
 this.code = code;
 }
 
 public String getMsg() {
 return msg;
 }
 
 public void setMsg(String msg) {
 this.msg = msg;
 } 
 
 // 根据value返回枚举类型,主要在switch中使用
  public static Code getByValue(int value) {
    for (Code code : values()) {
      if (code.getCode() == value) {
        return code;
      }
    }
    return null;
  } 
}

//获取代码
int code=Code.SUCCESS.getCode();
//获取代码对应的信息
String msg=Code.SUCCESS.getMsg();
 
//在switch中使用通常需要先获取枚举类型才判断，因为case中是常量或者int、byte、short、char，写其他代码编译是不通过的
 
int code=Code.SUCCESS.getCode(); 
switch (Code.getByValue(code)) {
 
 case SUCCESS：
 //......
 break;
 
 case FAIL：
 //......
 break; 
}

package com.lwd; 
public enum LwdColor {
 
  yello(0,"#0xff00ff00"),
  green(1,"#0xff0000ff"),
  blue(2,"#0xffffff00");
 
  private int value;
 
  public int getValue() {
    return value;
  }
 
  public void setValue(int value) {
    this.value = value;
  }
 
  public String getDesc() {
    return desc;
  }
 
  public void setDesc(String desc) {
    this.desc = desc;
  }
 
  private String desc;
 
  LwdColor(int value,String desc){
    this.value = value;
    this.desc = desc;
  }
 
  public static LwdColor getColorType(int type){
    for(LwdColor lwdColors:LwdColor.values()){
      if(lwdColors.getValue() == type){
        return lwdColors;
      }
    }
    return null;
  } 
}

package com.lwd; 
public class TestJava { 
  public static void main(String[] args){ 
    LwdColor lwdColor = LwdColor.getColorType(0); 
    switch (lwdColor){
 
      case yello:
        System.out.println( lwdColor.getValue() + "的颜色值 == " + lwdColor.getDesc());
         break;
    }
 
   } 
}