从长转换为日期格式
答
您可以使用下面的代码行来做到这一点。这里timeInMilliSecond是长整型值。
String dateString = new SimpleDateFormat("MM/dd/yyyy").format(new Date(TimeinMilliSeccond));
或者你也可以使用下面的代码。
String longV = "1343805819061";
long millisecond = Long.parseLong(longV);
// or you already have long value of date, use this instead of milliseconds variable.
String dateString = DateFormat.format("MM/dd/yyyy", new Date(millisecond)).toString();
参考: - DateFormat和SimpleDateFormat
附:根据您的需要更改日期格式。
答
您可以在Date实例或构造函数Date(long)上使用方法setTime;
setTime(long time)
Sets this Date object to represent a point in time that is time milliseconds after January 1, 1970 00:00:00 GMT.
Date(long date)
Allocates a Date object and initializes it to represent the specified number of milliseconds since the standard base time known as "the epoch", namely January 1, 1970, 00:00:00 GMT
然后用简单的日期格式化器
看http://docs.oracle.com/javase/1.4.2/docs/api/javax/swing/text/DateFormatter.html
答
java.util.Date dateObj = new java.util.Date(timeStamp);
这里的timeStamp是你的长整型这实际上是时间戳millieseconds, 你获取Java日期对象,现在你可以通过这个将它转换成字符串
SimpleDateFormat dateformatYYYYMMDD = new SimpleDateFormat("yyyyMMdd");
SimpleDateFormat dateformatMMDDYYYY = new SimpleDateFormat("MMddyyyy");
StringBuilder nowYYYYMMDD = new StringBuilder(dateformatYYYYMMDD.format(dateObj));
StringBuilder nowMMDDYYYY = new StringBuilder(dateformatMMDDYYYY.format(dateObj));