java中枚举用法

java

package com.sgcc.model;

public enum EventsValueEnum {

MY_HITS("0001", "春眠不觉晓"),

RULE_HITS("0002", "处处闻啼鸟"),

SEARCH_HITS("0003", "夜来风雨声"),

TOTAL_ITEM_SHARE("0004", "花落知多少");

private String type;

private String msg;

private EventsValueEnum(String type, String msg) {

this.type = type;

this.msg = msg;

}

/**

* 根据code获取枚举名称

* @param type

* @return

*/

public static EventsValueEnum instance(String type) {

for (EventsValueEnum deviceAdType : EventsValueEnum.values()) {

if(deviceAdType.getType().equals(type)) {

return deviceAdType;

}

}

return null;

}

/**

* 根据code获取value

* @param type

* @return

*/

public static String getMsgByType(String type){

for(EventsValueEnum adTypeEnum:EventsValueEnum.values()){

if(type.equals(adTypeEnum.getType())){

return adTypeEnum.getMsg();

}

}

return null;

}

/**

* 根据name获取code

* @param msg

* @return

*/

public static String getTypeByMsg(String msg){

for(EventsValueEnum adTypeEnum:EventsValueEnum.values()){

if(msg.equals(adTypeEnum.getMsg())){

return adTypeEnum.getType();

}

}

return null;

}

public String getType() {

return type;

}

public void setType(String type) {

this.type = type;

}

public String getMsg() {

return msg;

}

public void setMsg(String msg) {

this.msg = msg;

}

}

  测试

public class NewOrder {

public static void main(String[] args) {

String a="0001";

String b="0002";

String c="0003";

String d="0004";

String aa=DeviceAdTypeEnum.getMsgByType(a);

String bb=DeviceAdTypeEnum.getMsgByType(b);

String cc=DeviceAdTypeEnum.getMsgByType(c);

String dd=DeviceAdTypeEnum.getMsgByType(d);

System.out.println(aa+";");

System.out.println(bb+"。");

System.out.println(cc+";");

System.out.println(dd+"。");

}

}

  打印

D:\work\java\jdk1.8\jdk1.8\jdk1.8.0_51\bin\java.exe "

春眠不觉晓;

处处闻啼鸟。

夜来风雨声;

花落知多少。

Process finished with exit code 0

  

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