Enum枚举类型的示例代码

 

Enum枚举类型的示例

import java.util.HashMap;
import java.util.Map;

/**
 * @ClassName: RunningStatus
 * @author kanpiaoxue
 * @version 1.0
 * @CreateTime: 2019/03/29 19:15:00
 * @Description: 任务运行状态的枚举类
 */
public enum RunningStatus {
    //
    INIT(1, "初始化"),
    //
    READY(2, "已就绪"),
    //
    DISPATH(3, "已分发"),
    //
    RUNNING(4, "运行中"),
    //
    SUCCESS(5, "成功"),
    //
    FAILED(6, "失败"),
    //
    KILLED(7, "已杀死"),
    //
    IGNORED(8, "已忽略");

    private static final Map<String, RunningStatus> nameMappings = new HashMap<String, RunningStatus>(8);
    private static final Map<Integer, RunningStatus> codeMappings = new HashMap<Integer, RunningStatus>(8);

    static {
        for (RunningStatus status : values()) {
            nameMappings.put(status.name(), status);
            codeMappings.put(status.code, status);
        }
    }

    public static RunningStatus resolve(Integer code) {
        return resolve(code, codeMappings);
    }

    public static RunningStatus resolve(String method) {
        return resolve(method, nameMappings);
    }

    private static <T> RunningStatus resolve(T value, Map<T, RunningStatus> map) {
        return (value != null ? map.get(value) : null);
    }

    private final int code;

    private final String text;

    private RunningStatus(int code, String text) {
        this.code = code;
        this.text = text;
    }

    /**
     * @return the code
     */
    public int getCode() {
        return code;
    }

    /**
     * @return the text
     */
    public String getText() {
        return text;
    }

    public boolean matches(Integer code) {
        return (this == resolve(code));
    }

    public boolean matches(String method) {
        return (this == resolve(method));
    }

}