Convert Java string to Time, NOT Date

Question

I would like to convert a variable string to a Time type variable, not Date using Java. the string look like this 17:40

I tried using the code below but this instance is a date type variable not time

String fajr_prayertime  =       prayerTimes.get(0);
DateFormat formatter = new SimpleDateFormat("HH:mm");
fajr_begins = (Date)formatter.parse(fajr_prayertime);
System.out.println(" fajr time " + fajr_begins);

However Netbean complains that I should insert an exception as below;

DateFormat formatter = new SimpleDateFormat("HH:mm");
try {
fajr_begins = (Date)formatter.parse(fajr_prayertime);
} catch (ParseException ex) {
Logger.getLogger(JavaFXApplication4.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println(" fajr time " + fajr_begins);

Any idea how I can get the time out of the string above.

What format is the original `String` in? ... Also, Java doesn't have a `Time` object, other then `java.sql.Time`... — MadProgrammer, Sep 04 '13 at 02:17
the time come from ArrayList prayerTimes String fajr_prayertime = prayerTimes.get(0); — Ossama, Sep 04 '13 at 02:24
I don't know what you mean Nachok, but I am getting a string similar to i.e. 15:30 and would like to convert this string to a time so that I can compare it say if time > 15:30 then... — Ossama, Sep 04 '13 at 02:26

score 32 · Accepted Answer · answered Sep 04 '13 at 02:21

32

java.sql.Time timeValue = new java.sql.Time(formatter.parse(fajr_prayertime).getTime());

answered Sep 04 '13 at 02:21

ash

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I get the following, unreported exception parseexception, must be caught or declared to be thrown, do I really have to create an exception for this!! – Ossama Sep 04 '13 at 02:28
You do have to catch, or propogate, the exception. No need to create an exception though. Note that you don't *have* to do anything with the exception, but if you don't, incorrect input will be silently ignored, leading to headaches later. I recommend logging it as the original code sample does. – ash Sep 04 '13 at 02:36

score 20 · Answer 2 · edited Mar 15 '16 at 21:46

20

You might consider Joda Time or Java 8, which has a type called LocalTime specifically for a time of day without a date component.

Example code in Joda-Time 2.7/Java 8.

LocalTime t = LocalTime.parse( "17:40" ) ;

edited Mar 15 '16 at 21:46

vrcca

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answered Sep 04 '13 at 03:14

Matt Johnson-Pint

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score 6 · Answer 3 · answered Sep 04 '13 at 02:39

You might want to take a look at this example:

public static void main(String[] args) {

    String myTime = "10:30:54";
    SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");
    Date date = null;
    try {
        date = sdf.parse(myTime);
    } catch (ParseException e) {
        e.printStackTrace();
    }
    String formattedTime = sdf.format(date);

    System.out.println(formattedTime);

}

Paris1008 · Answer 4 · 2014-08-01T08:03:08.823

6

try {

    SimpleDateFormat format = new SimpleDateFormat("hh:mm a"); //if 24 hour format
    // or
    SimpleDateFormat format = new SimpleDateFormat("HH:mm"); // 12 hour format

    java.util.Date d1 =(java.util.Date)format.parse(your_Time);

    java.sql.Time ppstime = new java.sql.Time(d1.getTime());

} catch(Exception e) {

    Log.e("Exception is ", e.toString());
}

edited Aug 01 '14 at 08:03

answered Aug 01 '14 at 07:58

Paris1008

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score 5 · Answer 5 · edited Sep 04 '13 at 11:11

5

You can use the following code for changing the String value into the time equivalent:

 String str = "08:03:10 pm";
 DateFormat formatter = new SimpleDateFormat("hh:mm:ss a");
 Date date = (Date)formatter.parse(str);

Hope this helps you.

edited Sep 04 '13 at 11:11

Sarvan

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answered Sep 04 '13 at 07:42

Shivam

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score 4 · Answer 6 · answered Oct 19 '16 at 12:07

4

SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:MM");
simpleDateFormat.format(fajr_prayertime);

answered Oct 19 '16 at 12:07

Khusboo

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Basil Bourque · Answer 7 · 2020-06-17T20:12:22.070

Joda-Time & java.time

Both Joda-Time and java.time (new in Java 8) offer a LocalTime class to represent a time-of-day without any date or time zone.

Example code, identical code for both java.time and Joda-Time.

LocalTime localTime = new LocalTime( "14:40" );
LocalTime deadline = new LocalTime( "15:30" );
boolean meetsDeadline = localTime.isBefore( deadline );

About java.time

The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.

To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.

The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.

You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes. Hibernate 5 & JPA 2.2 support java.time.

Where to obtain the java.time classes?

Java SE 8, Java SE 9, Java SE 10, Java SE 11, and later - Part of the standard Java API with a bundled implementation.
- Java 9 adds some minor features and fixes.
Java SE 6 and Java SE 7
- Most of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
Android
- Later versions of Android bundle implementations of the java.time classes.
- For earlier Android (<26), the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….

score 1 · Answer 8 · answered Jun 17 '14 at 04:53

1

try...

 java.sql.Time.valueOf("10:30:54");

answered Jun 17 '14 at 04:53

Muhammad Suleman

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FYI, the `java.sql.Time` class has been supplanted by the [`java.time.LocalTime`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/time/LocalTime.html) class, as of the adoption of JSR 310. – Basil Bourque Jun 17 '20 at 20:15

score -1 · Answer 9 · answered Apr 13 '15 at 18:35

-1

String to Time (using an arbitrary time):

String myTime = "10:00:00"; 
Time startingTime = new Time (myTime);

String to Time (using currentTime):

String currentTime = getCurrentTime(); 
Time startingTime = new Time (currentTime);

Time to String:

private String getCurrentTime() {    
    SimpleDateFormat dateFormat = new SimpleDateFormat("kkmmss");
    String currentTime = dateFormat.format(System.currentTimeMillis());
    return currentTime;
}

answered Apr 13 '15 at 18:35

JanB

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What class is `Time`? Please mention library and link to doc. – Basil Bourque Apr 14 '15 at 06:26
When I create Time startingTime; - Eclipse offers the option to Import 'Time' (android.text.format) – JanB Apr 14 '15 at 11:14
1

Time constructor receives a long, not a String – frapeti Apr 21 '18 at 00:34
Android Edition is not the standard java so your code will not work. – Ess Jul 09 '19 at 08:56

Convert Java string to Time, NOT Date

9 Answers9

Joda-Time & java.time

About java.time

Linked