如何在JFreeChart Api中传递日期变量而不是键入日期....

Question

我正在尝试实施Jfreechart API，我正面临问题：

这是我的代码

/**Adding data in this series**/
seriesOne.add(new Task("Project Progress Bar",
new SimpleTimePeriod(makeDate(25, Calendar.JUNE, 2013),
makeDate(30, Calendar.JUNE, 2013))));

/**adding second task**/
/**Adding data in this series**/
seriesTwo.add(new Task("Project Progress Bar",
new SimpleTimePeriod(makeDate(28, Calendar.JUNE, 2013),
makeDate(30, Calendar.JUNE, 2013))));

makeDate的方法

private static Date makeDate(final int day, final int month, final int year) {

final Calendar calendar = Calendar.getInstance();
calendar.set(year, month, day);
final Date result = calendar.getTime();
return result;

}

我需要传递d1="2011-03-06" d2="2011-05-06" d3="2011-05-06" d4="2011-05-06" 而不是约会日期我怎么能这样做

new SimpleTimePeriod(makeDate(d1),
  makeDate(d2))));

非常感谢任何帮助，请

Answer 1

//assuming dates are passed in as a string in the format "yyyy-MM-dd"

public Date makeDate(String date){
return new SimpleDateFormat("yyyy-MM-dd").parse(string);
}

Answer 2

使用DateFormat来完成工作希望这有帮助??

Date d=DateFormat.getDateInstance(DateFormat.LONG).parse("June 13, 2013");