可用如下的程式碼實現

import java.util.*;
public class GetWeekDays {

    public GetWeekDays () {

    }
    public static void main(String[] args) {
        
        
        System.out.println("轉換結果: " + transfer2WeekDay("1034007"));

    }

    public static String transferAlarmLevel(String string) {
        
        StringBuffer stringBuffer = new StringBuffer("");
        for (int i = 0; i < string.length(); i++) {
            if (string.charAt(i) != '0') {
                stringBuffer.append((i + 1) + "");
                stringBuffer.append("、");
            }
        }
        return stringBuffer.substring(0, stringBuffer.length() - 1);
    }

    public static String transfer2WeekDay(String processedDate) {
        StringBuffer stringBuffer = new StringBuffer("");
        String[] periodsDate = processedDate.split("0");
        List<String> newPeriodsDate = new ArrayList<String>();
        for (String periodDate : periodsDate) {
            if (!"".equals(periodDate))
                newPeriodsDate.add(periodDate);
        }
        for (String periodDate : newPeriodsDate) {
            if (periodDate.length() == 1) {
                //從列舉獲得對應周幾
                String singleDate = WeekDaysEnum.getTypeNameById(Integer.valueOf(periodDate));
                stringBuffer.append(singleDate);
                stringBuffer.append("、");
            } else if (periodDate.length() > 1) {
                Character start = periodDate.charAt(0);
                Character end = periodDate.charAt(periodDate.length() - 1);
                Integer startNum = Integer.valueOf(start.toString());
                Integer endNum = Integer.valueOf(end.toString());
                String weekStart = WeekDaysEnum.getTypeNameById(startNum);
                String weekEnd = WeekDaysEnum.getTypeNameById(endNum);
                stringBuffer.append(weekStart);
                stringBuffer.append("至");
                stringBuffer.append(weekEnd);
                stringBuffer.append("、");
            }
        }
        return stringBuffer.substring(0, stringBuffer.length() - 1);
    }
}
 

import java.util.Map;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.List;
public enum WeekDaysEnum {
    Mon(1, "週一"), Tus(2, "週二"), Wen(3, "週三"), Thu(4, "週四"), Fri(5, "週五"), Sat(6, "週六"), sun(7, "週日");

    private int typeId;
    private String typeName;

    WeekDaysEnum(int typeId, String typeName) {
        this.typeId = typeId;
        this.typeName = typeName;
    }

    public int getTypeId() {
        return typeId;
    }

    public String getTypeName() {
        return typeName;
    }

    /*public static JSONArray toList() {
        JSONArray list = new JSONArray();
        JSONObject item = null;
        WeekDaysEnum[] values = values();

        for(int i = 0; i < values.length; ++i) {
            item = new JSONObject();
            WeekDaysEnum value = values[i];
            item.put("typeId", Integer.valueOf(value.getTypeId()));
            item.put("typeName", value.getTypeName());
            list.add(item);
        }

        return list;
    }*/
    public static List toList() {
        List list = new ArrayList();
        Map item = new HashMap();
        WeekDaysEnum[] values = values();
        for (int i = 0; i < values.length; ++i) {
            //item = new HashMap();
            WeekDaysEnum value = values[i];
            item.put("typeId", Integer.valueOf(value.getTypeId()));
            item.put("typeName", value.getTypeName());
            list.add(item);
        }
        return list;
    }

    public static String getTypeNameById(int typeId) {
        String value = "未知" + typeId;
        WeekDaysEnum[] values = values();

        for(int i = 0; i < values.length; ++i) {
            WeekDaysEnum type = values[i];
            if(type.getTypeId() == typeId) {
                value = type.getTypeName();
                break;
            }
        }

        return value;
    }

}