Java枚举使用笔记

原创：转载需注明原创地址 https://www.cnblogs.com/fanerwei222/p/11833790.html

Java枚举简单使用示例:

package com.shineyue.sreport.operaterecord;

/**
 * TODO 操作记录注解类枚举*/
public enum OperateRecordEnum {

    SELECT("SELECT", "查询"), DELETE("DELETE", "删除"), ADD("ADD", "增加"), UPDATE("UPDATE", "更新");

    private String key;
    private String value;

    OperateRecordEnum(String key, String value) {
        this.key = key;
        this.value = value;
    }

    /**
     * 根据key获取value的值
     *
     * @param key
     * @return
     */
    public static String getValueByKey(String key) {
        for (OperateRecordEnum s : OperateRecordEnum.values()) {
            if (s.getKey() == key) {
                return s.getValue();
            }
        }
        return null;
    }

    /**
     * 根据匹配value的值获取key
     *
     * @param channelName
     * @return
     */
    public static String getKeyByValue(String channelName) {
        for (OperateRecordEnum s : OperateRecordEnum.values()) {
            if (channelName.equals(s.getValue())) {
                return s.getKey();
            }
        }
        return null;
    }

    public String getKey() {
        return key;
    }

    public String getValue() {
        return value;
    }
}