显于某天的星期

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package test;import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.GregorianCalendar;import java.util.List;

/**
* @author - yy
* @time   - Dec 9, 2008 3:42:38 PM
*/
public class Test4 {

/**
   * @param args
   * @throws ParseException
   */
public static void main(String[] args) throws ParseException {
    List<DayInfo> list = new Test4().genDayInfoList(2008, 12);
    System.out.println(list);
    // 输出结果
    //    [< id = 1 name = 星期一 selected = false>
    // , < id = 2 name = 星期二 selected = false> //    , < id = 3 name = 星期三 selected = false>
    //    , < id = 4 name = 星期四 selected = false>
    //    , < id = 5 name = 星期五 selected = false>
    //    , < id = 6 name = 星期六 selected = false>
    //    , < id = 7 name = 星期日 selected = false>
    //    , < id = 8 name = 星期一 selected = false>
    //    , < id = 9 name = 星期二 selected = true>
    // , < id = 10 name = 星期三 selected = false> //    , < id = 11 name = 星期四 selected = false>
    //    , < id = 12 name = 星期五 selected = false>
    //    , < id = 13 name = 星期六 selected = false>
    //    , < id = 14 name = 星期日 selected = false>
    //    , < id = 15 name = 星期一 selected = false>
    //    , < id = 16 name = 星期二 selected = false>
    //    , < id = 17 name = 星期三 selected = false>
    //    , < id = 18 name = 星期四 selected = false>
    //    , < id = 19 name = 星期五 selected = false>
    //    , < id = 20 name = 星期六 selected = false>
    //    , < id = 21 name = 星期日 selected = false>
    //    , < id = 22 name = 星期一 selected = false>
    //    , < id = 23 name = 星期二 selected = false>
    //    , < id = 24 name = 星期三 selected = false>
    //    , < id = 25 name = 星期四 selected = false>
    //    , < id = 26 name = 星期五 selected = false>
    //    , < id = 27 name = 星期六 selected = false>
    //    , < id = 28 name = 星期日 selected = false>
    //    , < id = 29 name = 星期一 selected = false>
    //    , < id = 30 name = 星期二 selected = false>
    //    , < id = 31 name = 星期三 selected = false>
    //    ]

}

public List<DayInfo> genDayInfoList(int year, int month) throws ParseException {
    Calendar calendar = GregorianCalendar.getInstance();
    int curDay = calendar.get(Calendar.DATE);
    calendar.setTime(new SimpleDateFormat("yyyy-MM-dd").parse(year + "-" + month + "-01"));
    List<DayInfo> list = new ArrayList<DayInfo>();
    int days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
    int weekOfFirstDay = calendar.get(Calendar.DAY_OF_WEEK);
    for (int i = 1; i <= days; i++) {
      DayInfo dayInfo = new DayInfo();
      if (curDay == i) {
        dayInfo.setSelected(true);
      }
      dayInfo.setId(i);
      dayInfo.setName(this.getWeekName((i + weekOfFirstDay - 2) % 7));
      list.add(dayInfo);
    }
    return list;
}

private String getWeekName(int week) {
    String[] weeks = new String[] { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
    return weeks[week];
}
}

class DayInfo {
private int id;
private String name;
private boolean selected = false;

public int getId() {
    return this.id;
}

public void setId(int id) {
    this.id = id;
}

public String getName() {
    return this.name;
}

public void setName(String name) {
    this.name = name;
}

public boolean isSelected() {
    return this.selected;
}

public void setSelected(boolean selected) {
    this.selected = selected;
}

@Override
public String toString() { // AutoGenerate
    StringBuilder sb = new StringBuilder();
    sb.append("<");
    sb.append(" id = ").append(this.id);
    sb.append(" name = ").append(this.name);
    sb.append(" selected = ").append(this.selected);
    sb.append(">/n");
    return sb.toString();
}
}