String s1 = "8:34:35";
String s2 = "4:24:23";
SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");
Date d1 = sdf.parse(s1);
Date d2 = sdf.parse(s2);
long date1 = d1.getTime();
long date2 = d2.getTime();
long date3 = (long)(date1 + date2);
Date date = new Date();
date.setTime(date3);
String s = "" + date.getHours() + date.getMinutes() + date.getSeconds();
System.out.println(s);
为什么分钟和秒相加减没问题,小时加减会有问题呢?
请指导下这段代码什么地方有问题
String s2 = "4:24:23";
SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");
Date d1 = sdf.parse(s1);
Date d2 = sdf.parse(s2);
long date1 = d1.getTime();
long date2 = d2.getTime();
long date3 = (long)(date1 + date2);
Date date = new Date();
date.setTime(date3);
String s = "" + date.getHours() + date.getMinutes() + date.getSeconds();
System.out.println(s);
为什么分钟和秒相加减没问题,小时加减会有问题呢?
请指导下这段代码什么地方有问题
String s1 = "8:34:35";
String s2 = "4:24:23";
SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");
Date d1 = sdf.parse(s1);
Date d2 = sdf.parse(s2);
long date1 = d1.getTime();
long date2 = d2.getTime();
long date3 = (long)(date1 + date2)/1000;
Date dt = new Date(date3 * 1000);
String sDateTime = sdf.format(dt);
System.out.println(sDateTime);
String s1 = "8:34:35";
String s2 = "4:29:23";
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
Date d1 = sdf.parse(s1);
Date d2 = sdf.parse(s2);
long date1 = d1.getTime();
long date2 = d2.getTime();
long date3 = (long)(date1 + date2)/1000;
Date dt = new Date(date3 * 1000);
String sDateTime = sdf.format(dt);
System.out.println(sDateTime);
HH大写就可以了
你把我写的那些直接复制到你的程序中试试,date.getHours() + date.getMinutes() + date.getSeconds()过时的方法能不用就不用,
String s1 = "8:34:35";
String s2 = "4:29:23";
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
Date d1 = sdf.parse(s1);
Date d2 = sdf.parse(s2);
long date1 = d1.getTime();
long date2 = d2.getTime();
long date3 = (long)(date1 + date2);
Date dt = new Date(date3);
String sDateTime = sdf.format(dt);
System.out.println(sDateTime);又改动了下,有些好像没必要存在
HH表示的是0-23,这个不好弄了