time comparison between given periods

[Anuranjan Arya]

HI
I want to to check whether a given time lies between a given periods of time.
for example

whether 11:45:00 lies between 11:00:00 and 12:00:00.

Can any 1 tell me, how can i achieve this in java?

Thank you

[Campbell Ritchie]

Use the classes which represent time, and which implement the Comparable interface. For time try java.util.Date and java.util.Calendar (or its concrete subtypes) or google for Yoda Time or google for Apache commons and look there for time classes; the inbuilt Java classes are (some people believe) poorly designed. You can create objects representing your times mentioned (which require a date as well as a time) then if compareTo returns -1 for the lower bound or 1 for the higher bound you know your time isn't in that period. Or vice versa.

[Campbell Ritchie]

By the way, it's not "any 1": read this.

[sachin burange]

Try to Use Calendar methods:


public abstract boolean equals(Object obj)
public abstract boolean after(Object when)
public abstract boolean before(Object when)

[Anuranjan Arya]

Thanks Sachin your reply solved me probem

[Venkata Krishn Rao Maddu]

check the following example,

public class TimeCheck {

	private Date dateFromHourMinSec(final String hhmmss) 
	{ 
	    if (hhmmss.matches("([0-1][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])")) 
	    { 
	        final String[] hms = hhmmss.split(":"); 
	        final GregorianCalendar gc = new GregorianCalendar(); 
	        gc.set(Calendar.HOUR_OF_DAY, Integer.parseInt(hms[0])); 
	        gc.set(Calendar.MINUTE, Integer.parseInt(hms[1])); 
	        gc.set(Calendar.SECOND, Integer.parseInt(hms[2])); 
	        gc.set(Calendar.MILLISECOND, 0); 
	        return gc.getTime(); 
	    } 
	    else 
	    { 
	        throw new IllegalArgumentException(hhmmss + " is not a valid time, expecting HH:MM:SS format"); 
	    } 
	} 
	boolean isNowBetweenDateTime(final Date s, final Date e,final Date c) 
	{ 
	    //final Date now = new Date(); 
	    return c.after(s) && c.before(e); 
	} 

	public static void main(String[] args) {
		
		TimeCheck tc = new TimeCheck();
		
		System.out.println(tc.isNowBetweenDateTime(tc.dateFromHourMinSec("11:00:00"),tc.dateFromHourMinSec("12:00:00"),tc.dateFromHourMinSec("11:45:00")));

	}