public class MyDate{
int day
int month
int year
public MyDate(){}
public MyDate(int day,int month,int year){
this.day = day
this.month = month
this.year = year
}
public void funtion(MyDate d){
int newDay = d.day
int newMonth = d.month
int newYear = d.year
Calendar c1 = Calendar.getInstance()
c1.set(newYear,newMonth,newDay)
long n1 = c1.getTimeInMillis()
Calendar c2 = Calendar.getInstance()
c2.set(year,month,day)
long n2 = c2.getTimeInMillis()
System.out.println( "相差天数为:" + Math.abs((n1 - n2)/24/3600000)) }
public static void main(String[] args){
MyDate d1 = new MyDate(1,1,2008)
MyDate d2 = new MyDate(2,1,2001)
d1.funtion(d2)
}
}
Java计算两个日期时间相差几天,几小时,几分钟，其实好简单就可以实现jsp,java中计算两个时间差了public class Test {
public void dateDiff(String startTime, String endTime, String format) {
//按照传入的格式生成一个simpledateformate对象
SimpleDateFormat sd = new SimpleDateFormat(format)
long nd = 1000*24*60*60//一天的毫秒数
long nh = 1000*60*60//一小时的毫秒数
long nm = 1000*60//一分钟的毫秒数
long ns = 1000//一秒钟的毫秒数long difftry {
//获得两个时间的毫秒时间差异
diff = sd.parse(endTime).getTime() - sd.parse(startTime).getTime()
long day = diff/nd//计算差多少天
long hour = diff%nd/nh//计算差多少小时
long min = diff%nd%nh/nm//计算差多少分钟
long sec = diff%nd%nh%nm/ns//计算差多少秒//输出结果
System.out.println("时间相差："+day+"天"+hour+"小时"+min+"分钟"+sec+"秒。")
