I want to get a Date without time, but always failed.
below is my codes:

```
    long curLong = System.currentTimeMillis();
    curLong = curLong -  curLong % TimeUnit.DAYS.toMillis(1);
    Date date = new Date(curLong);
    System.out.println("date = " + date);

```

the output:

```
date = Mon Oct 28 08:00:00 CST 2019

```

anyone knows why? Thank you