Java学习----日期函数

Date   Calendar

public class TestDate {
    private Date date;
    Calendar calendar;

    public TestDate() {
        //date = new Date();
        //Date date2 = new Date();
        //System.out.println(date.after(date2)); // date 是否比  date2晚  false

        calendar = Calendar.getInstance();
        System.out.println(calendar.get(Calendar.WEEK_OF_YEAR));

        System.out.println(calendar.get(Calendar.YEAR) + "-" +
        (calendar.get(Calendar.MONTH) + 1) + "-" +
        (calendar.get(Calendar.DATE)));

    }

    public static void main(String[] args) {
        TestDate testDate = new TestDate();
    }
}

3
2016-1-13