Java 将多个日期设置为日历

我是java中使用日历的新手。我试图为我的Android日历设置多个日期，但我做错了，因为我只看最后一个

我试过这样做：

 Calendar cal = Calendar.getInstance();
                cal.set(Calendar.YEAR, 2015);
                cal.set(Calendar.MONTH, Calendar.MARCH);
                cal.set(Calendar.DAY_OF_MONTH, 30);
                cal.set(Calendar.YEAR, 2015);
                cal.set(Calendar.MONTH, Calendar.MARCH);
                cal.set(Calendar.DAY_OF_MONTH, 20);
Date dateRepresentation = cal.getTime();

Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, 2015);
        cal.set(Calendar.MONTH, Calendar.MARCH);
        cal.set(Calendar.DAY_OF_MONTH, 30);

        Calendar cal2 = Calendar.getInstance();
        cal2.set(Calendar.YEAR, 2015);
        cal2.set(Calendar.MONTH, Calendar.MARCH);
        cal2.set(Calendar.DAY_OF_MONTH, 20);

        Date dateRepresentation = cal.getTime();
        Date dateRepresentation2 = cal2.getTime();

就像这样：

 Calendar cal = Calendar.getInstance();
                cal.set(Calendar.YEAR, 2015);
                cal.set(Calendar.MONTH, Calendar.MARCH);
                cal.set(Calendar.DAY_OF_MONTH, 30);
                cal.set(Calendar.YEAR, 2015);
                cal.set(Calendar.MONTH, Calendar.MARCH);
                cal.set(Calendar.DAY_OF_MONTH, 20);
Date dateRepresentation = cal.getTime();

Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, 2015);
        cal.set(Calendar.MONTH, Calendar.MARCH);
        cal.set(Calendar.DAY_OF_MONTH, 30);

        Calendar cal2 = Calendar.getInstance();
        cal2.set(Calendar.YEAR, 2015);
        cal2.set(Calendar.MONTH, Calendar.MARCH);
        cal2.set(Calendar.DAY_OF_MONTH, 20);

        Date dateRepresentation = cal.getTime();
        Date dateRepresentation2 = cal2.getTime();

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有人能帮我吗？谢谢你

你应该澄清我做错了，因为我只看了最后一个。你试过getSelectedDates了吗？当我运行日历视图时，它只看最后一个，在我的示例2015年3月20日没有getSelectedDates，你如何使用它？