对相同日期使用不同方法的java.util.date类给出不同的输出

Question

public static void main(String[] args) throws ParseException {
    // create a date
    Date date = new Date();
    long diff = date.getTime();
    Date date1 = new Date(2013, 10, 1, 11, 6);
    long diff1 = date1.getTime();
    System.out.println("date is 1-10-2013, " + diff + " have passed.");
    System.out.println("date is 1-10-2013, " + diff1 + " have passed.");
}

而输出是

date is 1-10-2013, 1380605909318 have passed.
date is 1-10-2013, 61341428160000 have passed.

谁能详细说明一下1380605909318和61341428160000之间的区别？

Answer 1

这一行：

Date date1 = new Date(2013, 10, 1, 11, 6);

...做不到你想做的。它创建一个date对象，表示3913年的11月1日，即当地时间11:06。我不认为这是你想要的。

实际上，如果您更改代码以包含日期本身，而不是硬编码您认为正确的值，您将看到：

System.out.println("date is " + date + ", " + diff + " have passed.");
System.out.println("date is " + date1 + ", " + diff1 + " have passed.");