How to set time of java.util.Date instance to 00:00:00?

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I have a variable of the type java.util.Date.

How can I set the time part to 00:00:00?

I am not allowed to use an Apache Commons library or JodaTime. The java.util.Calendar is probably my only option.


To remove time from the Date object completely, you could use this:

public static Date removeTime(Date date) {    
        Calendar cal = Calendar.getInstance();  
        cal.setTime(date);  
        cal.set(Calendar.HOUR_OF_DAY, 0);  
        cal.set(Calendar.MINUTE, 0);  
        cal.set(Calendar.SECOND, 0);  
        cal.set(Calendar.MILLISECOND, 0);  
        return cal.getTime(); 
    }

Pass into the method the Date object that you want to modify and it will return a Date that has no hours/minutes etc.

If changing the Date object itself isn't required, use SimpleDateFormat. Set the format the way you want ie. remove hours/minutes. Then call the format method and pass in the Date object you want changed.

SimpleDateFormat sdf = new SimpleDateFormat("MMM dd,yyyy");
System.out.println(sdf.format(yourDate));

Set time to 00:00:00, Field number for get and set indicating the hour of the morning or afternoon. minute * @param second * @param ms * * @return new instance of java.util. Date time part to 00:00:00 By using LocalDate class of Java 8/Joda-datetime api: The following code snippet shows you how to remove time information from the java.util.Date object. The static method removeTime() in the code snippet below will take a Date object as parameter and will return a new Date object where the hour, minute, second and millisecond information have been reset to zero.


How do I set the time of java.util.Date instance to 00:00:00?, How do I set the time of java.util.Date instance to 00:00:00? By Wayan Saryada in Core API, Util Package  The java.util.Date.setTime(long time) method sets this Date to show time milliseconds after January 1, 1970 00:00:00 GMT. Declaration. Following is the declaration for java.util.Date.setTime() method. public void setTime(long time) Parameters. time − the number of milliseconds. Return Value. The method does not return any value. Exception. NA


In Java 8 'java.time.LocalDate.atStartOfDay()' can be used too:

    Date date = new Date();
    Instant inst = date.toInstant();
    LocalDate localDate = inst.atZone(ZoneId.systemDefault()).toLocalDate();
    Instant dayInst = localDate.atStartOfDay(ZoneId.systemDefault()).toInstant();
    Date day = Date.from(dayInst);

Set Time to Start of Day or Midnight (00:00:00) in Java, In this article we will cover how to initialize a date time object with time set as the start of the day or midnight or at 00:00:00 AM in Java. We will  In this article we will cover how to initialize a date time object with time set as the start of the day or midnight or at 00:00:00 AM in Java. We will do so using the legacy java.util.Date and Calendar class and we will also cover how this can be achieved using the Java 8 java.time classes like Instant, ZoneId, LocalDate etc.


Like @Sionnach733, to remove time from Date, you can write this function for your DateTimeUtils with clear:

public static Date getDateOnly(final Date input) {
        final Calendar cal = Calendar.getInstance();
        cal.setTime(input);
        cal.clear(Calendar.HOUR_OF_DAY);
        cal.clear(Calendar.MINUTE);
        cal.clear(Calendar.SECOND);
        cal.clear(Calendar.MILLISECOND);
        return cal.getTime();
    }

Sets the time on the same day to 00:00:00.000, import java.util.Date; public class Util{ /** * Sets the time on the same day to 00:00​:00.000 * * @param Convert the time to the midnight of the currently set date. 8. Converts a given time in milliseconds into a XMLGregorianCalendar object. I created a Date object in Java. When I do so, it shows something like: date=Tue Aug 09 00:00:00 IST 2011.As a result, it appears that my Excel file is lesser by one day (27 feb becomes 26 feb and so on) I think it must be because of time.


Date setTime() method in Java with Examples, The setTime() method of Java Date class sets a date object. It sets date object to represent time milliseconds after January 1, 1970 00:00:00 import java.util. In this post, we will see how to convert java.util Date to java.sql Date, Timestamp and Time in Java. We know that Relational databases like Oracle, MySQL supports DATE, TIME and TIMESTAMP datatypes. All these datatypes have a corresponding class in JDBC and each of them extend java.util.Date. In this post, we will see how to convert java.util


java.util.Date, SECOND, int seconds) . void, 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. Be aware that java.util.Date objects do not contain any timezone information by themselves - you cannot set the timezone on a Date object. The only thing that a Date object contains is a number of milliseconds since the "epoch" - 1 January 1970, 00:00:00 UTC.


: Class Date, java.util. Class Date. java.lang.Object | +--java.util.Date since the standard base time known as "the epoch", namely January 1, 1970, 00:00:00 GMT. Date(​long  The java.util.Date class represents date and time in java. It provides constructors and methods to deal with date and time in java. The java.util.Date class implements Serializable, Cloneable and Comparable<Date> interface. It is inherited by java.sql.Date, java.sql.Time and java.sql.Timestamp interfaces. After Calendar class, most of the