PollutantCodeEnum.java

public enum PollutantCodeEnum {

	PM10("001"),
	SO2("002"),
	NO2("005"),
	CO("006"),
	O3("007"),
	PM25("022"),
	Unknown("");


	private String code;

	PollutantCodeEnum(String code) {
		this.code = code;
	}

	public String getCode() {
		return code;
	}

	public void setCode(String code) {
		this.code = code;
	}

	public static PollutantCodeEnum of(String code) {

		if (Strings.isNullOrEmpty(code)) {
			return Unknown;
		} else if (code.equalsIgnoreCase("001")) {
			return PM10;
		} else if (code.equalsIgnoreCase("002")) {
			return SO2;
		} else if (code.equalsIgnoreCase("005")) {
			return NO2;
		} else if (code.equalsIgnoreCase("006")) {
			return CO;
		} else if (code.equalsIgnoreCase("007")) {
			return O3;
		} else if (code.equalsIgnoreCase("022")) {
			return PM25;
		} else {
			return Unknown;
		}


	}
}