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SimpleDateFormat not working on 1629777600000 [closed]

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Date format coming from the database: 1629777600000
SimpleDateFormat simpleDateFormatter = new SimpleDateFormat("MM/dd/yyyy");
simpleDateFormat.format(1629777600000);
When using this simple date format I am not able to convert 1629777600000 to a viewable date

SimpleDateFormat simpleDateFormatter = new SimpleDateFormat("MM/dd/yyyy");
System.out.println(simpleDateFormatter.format(1629777600000L));
Print: 08/24/2021
But your code does not compile:
you initialize simpleDateFormatter but use simpleDateFormat (without ter)
1629777600000 is a Long, therefore it needs an L at its end
I think the L problem is just from modifiying the code for the stackoverflow question. But the variable name is maybe a real problem in your code.

Problem: wrong output using Java Calendar class [closed]

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I am a Java developer.
I have a question about the Java Calendar library class.
What is my mistake? Is it a bug in Java?
Please explain to me.
public static void main(String[] args) {
Calendar cal2 = Calendar.getInstance();
Calendar cal3 = Calendar.getInstance();
DateFormat dateFormat = new SimpleDateFormat("dd/MM/YYYY");
cal3.add(Calendar.DATE, -1);
String today = (dateFormat.format(cal2.getTime()));
String yesterday = (dateFormat.format(cal3.getTime()));
System.out.println(today);
System.out.println(yesterday);
}
Output:
01/01/2019
Picked up _JAVA_OPTIONS: -Xmx512M
31/12/2019
2019 is as expected in the first line, but I had expected 2018 in the last line.

Use yyyy(Year) for year instead YYYY(Week year). See the doc.

Java Date String to date same format [closed]

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2013-06-24 15:43:00.0 this is Sting
i want parse that to Date
but in same formate
if Month is Month Jan it should be 1 etc

Use the SimpleDateFormat like this:
String dateString = "2013.06.24 15:43:00";
SimpleDateFormat sdfToDate = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
Date date1 = sdfToDate.parse(dateString);
System.out.println(sdfToDate.format(date1));

String to date Conversion in Java [closed]

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I have this code
SimpleDateFormat ft = new SimpleDateFormat ("dd/MM/yyyy");
String sDate="2013-11-13";
String formattedDate=ft.format( ft.parse(sDate));
but this not working. Any help

You need to change the date format like this
SimpleDateFormat ft = new SimpleDateFormat ("yyyy-MM-dd");
Edit
comment question : but I need dd/mm/yyyy format?
Date date = new SimpleDateFormat("yyyy-MM-dd").parse("2013-11-13");
String formattedDate = new SimpleDateFormat("dd/MM/yyyy").format(date);
System.out.println(formattedDate);

Change SimpleDate Format to below, and it shall work
SimpleDateFormat ft = new SimpleDateFormat ("yyyy-MM-dd");

Add Day and Time parts to a Date Object [closed]

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I have two date objects.
Date d1;
Date d2;
My program stores in d1, the date in the format 'dd/MM/yyyy' and in d2 in the format 'HH:mm'.
I would now like to combine these information and create a new Date object with the format 'dd/MM/yyyy HH:mm'.
Any pointers on how can I achieve so?
-V

If you are indeed using Date objects, just set the time of d1 to match that of d2.
d1.setHours(d2.getHours());
d1.setMinutes(d2.getMinutes());
Or make a new Date object if you don't want to use d1. Just parse it afterwards with SimpleDateFormat.
Note however that this is deprecated and it's better to use Calendar for this.

First, most of functionality of Date is deprecated. Use Calendar instead. Second, to parse and create string representation of date use SimpleDateFormat.
I hope these tips are enough to start. There are a lot of references in net and javadoc to continue. Good luck.

You cannot use Date for this purpose. You should instead use Calendar (from JDK) or joda-time.

try out this..
String dateValue= new java.util.Date().toString();
String concat like this..
String newDateTime = d1+""+d2+":00";

Try this
DateFormat df1=new SimpleDateFormat("dd/MM/yyyy");
DateFormat df2=new SimpleDateFormat("HH:mm");
Date d1=df1.parse("09/07/2013");
Date d2=df2.parse("14:43");
String d=df1.format(d1).toString()+" "+df2.format(d2).toString();
DateFormat newDate=new SimpleDateFormat("dd/MM/yyyy HH:mm");
System.out.println(newDate.format(newDate.parse(d)));