Convert millisecond String to Date in Java

Question

i have a String x = "1086073200000" . This is basically millisecond which I need to convert to a Date.

To convert i am using

DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");

long tempo1=Long.parseLong(x);
System.out.println(tempo1);  // output is 86073200000 instead of the whole thing
long milliSeconds=1346482800000L;

Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(milliSeconds);
System.out.println(formatter.format(calendar.getTime())); 

The problem is when i convert the string x to long , some digits go away due to the limit on the size of long.

How do I preserve the entire String.

THanks.

Answer 1

double tempo=Double.parseDouble(z);

Why are you parsing your String which is supposed to be a Long as a Double?

Try using Long.parseLong:

String x = "1086073200000"

DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");

long milliSeconds= Long.parseLong(x);
System.out.println(milliSeconds);

Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(milliSeconds);
System.out.println(formatter.format(calendar.getTime())); 

Answer 2

I tried this code and it worked for me

public static void main(String[] args) {
    String x = "1086073200000";
    long foo = Long.parseLong(x);
    System.out.println(x + "\n" + foo);

    Date date = new Date(foo);
    DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
    System.out.println(formatter.format(date)); 
}