实验七Java中的时间日期类库.doc

实验七 Java中的时间日期类库【开发语言及实现平台或实验环境】Windows2000 或XP，JDK1.6与Eclipse 【实验目的】1. 熟悉时间日期类的关系2. 掌握Date、Calendar 和Simple DateFormat【实验要求】1.掌握Date、Calendar 和Simple DateFormat的用法。【实验内容】3 个日期类 Date、Calendar 和 DateFormat 的使用方式及显示的样式。import java.util.*;import java.text.*;public class TestDateAndTimepublic static void main (String args)Date today = new Date();/当前日期和时间 SimpleDateFormat sdf;sdf= new SimpleDateFormat(yyyy年MM月dd日hh时mm分ss 秒a EEEEE); System.out.println(当前日期和时间: +sdf.format(today);long hms=System.currentTimeMillis();/当前时间的毫秒数 System.out.println(当前时间的毫秒数=+hms);Date tomorrow = new Date(hms+24*60*60*1000); System.out.println(明天是+sdf.format(tomorrow);Calendar now = Calendar.getInstance();int year =now.get(Calendar.YEAR);/年份 int month=now.get(Calendar.MONTH)+1;/月份 int day = now.get(Calendar.DATE);/日期 System.out.print(今天是+year+年+month+月+day+日); int week = now.get(Calendar.DAY_OF_WEEK);/星期 switch (week)case 1: System.out.println(星期日);break; case 2: System.out.println(星期一);break; case 3: System.out.println(星期二);break; case 4: System.out.println(星期三);break; case 5: System.out.println(星期四);break; case 6: System.out.println(星期五);break; case 7: System.out.println(星期六);break; 【完成实验项目】1. 编写一个程序，实现以下要求，根据运行时提供的参数(格式为”yyyy-mm-dd”)，输出其对应的星期次序，例如，输出2013-11-2，输出2013-11-2是星期六。2. 编写一个java应用程序，判断两个日期的大小，以及两个日期之间的间隔天数1.import java.util.*;import java.text.*;public class data public static void main(String args) Date today = new Date();/当前日期和时间 SimpleDateFormat sdf;sdf= new SimpleDateFormat(yyyy-MM-dd); System.out.println(当前日期和时间: +sdf.format(today);Calendar now = Calendar.getInstance();int year =now.get(Calendar.YEAR);/年份 int month=now.get(Calendar.MONTH)+1;/月份 int day = now.get(Calendar.DATE);/日期 System.out.print(今天是+year+-+month+-+day); int week = now.get(Calendar.DAY_OF_WEEK);/星期 switch (week)case 1: System.out.println(星期日);break; case 2: System.out.println(星期一);break; case 3: System.out.println(星期二);break; case 4: System.out.println(星期三);break; case 5: System.out.println(星期四);break; case 6: System.out.println(星期五);break; case 7: System.out.println(星期六);break; import java.util.*; public class Date int year; int month; int day; public Date() this.year = year; this.month = month; this.day = day; public int getyear() System.out.println(请输入年份); Scanner a = new Scanner(System.in); int date = a.nextInt(); return date; public int getMonth() System.out.println(请输入月份); Scanner a1 = new Scanner(System.in); int date1 = a1.nextInt(); return date1; public int getDay() System.out.println(请输入天数); Scanner a2 = new Scanner(System.in); int date2 = a2.nextInt(); return date2; public static void main(String args) / TODO Auto-generated method stub Date d = new Date(); Calendar c = Calendar.getInstance(); c.set(d.getyear(),d.getMonth(),d.getDay(); long time1 = c.getTimeInMillis(); c.set(d.getyear(),d.getMonth(),d.getDay(); long time2 = c.getTimeInMillis(); long 相隔天数 = (time1 - time2)/(1000*60*60*24); System.out.println(这两个日期相隔天数是+相隔天数); 2.import java.util.*;public class com private int year;private int month;private int day;com(int year,int month,int day)this.year=year;this.month=month;this.day=day;public int getDay() return day;public void setDay(int day) this.day = day;public int getMonth() return month;public void setMonth(int month) this.month = month;public int getYear() return year;public void setYear(int year) this.year = year;public static void main(String args) com c1=new com(2012,3,4);com c2=new com(2013,10,1);Calendar c = Calendar.getInstance(); c.set(c1.year,c1.month,c1.day); long time1 = c.getTimeInMilli