java 枚举的优雅定义

java 枚举的优雅定义

新建枚举

public enum CommissionStatusEnum {
    
    

    ONGOING(10, "进行中"),
    FINISHED(20, "已完成"),
    CLOSED(30, "已关闭");

    private Integer key;
    private String value;

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

    public static String getValue(Integer key) {
    
    
        for (CommissionStatusEnum c : CommissionStatusEnum.values()) {
    
    
            if (c.getKey().equals(key)) {
    
    
                return c.value;
            }
        }
        return null;
    }

    public static String getName(Integer key) {
    
    
        for (CommissionStatusEnum c : CommissionStatusEnum.values()) {
    
    
            if (c.getKey().equals(key)) {
    
    
                return c.name();
            }
        }
        return "";
    }

    public static CommissionStatusEnum getEnum(Integer key) {
    
    
        for (CommissionStatusEnum c : CommissionStatusEnum.values()) {
    
    
            if (c.getKey().equals(key)) {
    
    
                return c;
            }
        }
        return null;
    }

    public static boolean isExist(Integer key) {
    
    
        for (CommissionStatusEnum c : CommissionStatusEnum.values()) {
    
    
            if (c.getKey().equals(key)) {
    
    
                return true;
            }
        }
        return false;
    }

    public Integer getKey() {
    
    
        return key;
    }

    public void setKey(Integer key) {
    
    
        this.key = key;
    }

    public String getValue() {
    
    
        return value;
    }

    public void setValue(String value) {
    
    
        this.value = value;
    }
}

获取枚举的key

CommissionStatusEnum.FINISHED.getKey();

获取枚举的value

CommissionStatusEnum.FINISHED.getValue();

获取枚举的名称

CommissionStatusEnum.getName(CommissionStatusEnum.CLOSED.getKey());
CommissionStatusEnum.getEnum(CommissionStatusEnum.CLOSED.getKey());