java中的枚举使用

枚举类定义如下： package java1996;

public enum Status {

SCUUESS("1", "success"), FAILED("2", "failed"); private String value; private String desc; public String getValue() { return value; } public void setValue(String value) { this.value = value; } public String getDesc() { return desc; } public void setDesc(String desc) { this.desc = desc; } private Status(String value, String desc) { this.value = value; this.desc = desc; }

}

测试类如下：

package java1996;

public class StatusTest {

public static void main(String[] args) {
	System.out.println(Status.SCUUESS.getValue());
	System.out.println(Status.SCUUESS.getDesc()); System.out.println(Status.FAILED.getValue()); System.out.println(Status.FAILED.getDesc()); }

}

再比如，我们在操作数据库的时候，通常使用数字保存到数据库中，但是在界面上显示的时候，需要展示其中文意思，那么我们就可以通过下边的方式：

package java1996;

public enum FlightType {

OW(1, "单程"), RT(2, "往返"); public Integer code; public String desc; public Integer getCode() { return code; } public void setCode(Integer code) { this.code = code; } public String getDesc() { return desc; } public void setDesc(String desc) { this.desc = desc; } FlightType(Integer code, String desc) { this.code = code; this.desc = desc; } public static FlightType getTypeByCode(Integer code) { FlightType defaultType = FlightType.OW; for (FlightType ftype : FlightType.values()) { if (ftype.code == code) { return ftype; } } return defaultType; } public static String getDescByCode(Integer code) { return getTypeByCode(code).desc; }

}