Regular expressions for judging time--Regular expressions

The common method is to separate out the hours, minutes, seconds, respectively, to judge:
public static Boolean Timecheck (string time, string owner) {
Checks whether the time string times satisfies the format "HH:mm:ss" or "hh:mm" and returns False if the corresponding message is not satisfied
if (Time.equals ("")) {
String msg = owner+ ":" + "Time is EMPTY.";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
int hours, minutes, seconds = 0;
StringTokenizer st = new StringTokenizer (Time, ":");
int tokens = St.counttokens ();
if (tokens!= 3 && tokens!= 2) {
String msg = owner+ ': ' + ' time ' + time + ' does not conform to the HH:MM:SS format, nor hh:mm format. '
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
String Hourtoken = St.nexttoken ();
try {
Hours = Integer.parseint (Hourtoken);
catch (NumberFormatException nfe) {
String msg = owner+ ":" +hourtoken + "in" + Time + "can not be parsed as hours.";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
String Minutetoken = St.nexttoken ();
try {
minutes = Integer.parseint (Minutetoken);
catch (NumberFormatException nfe) {
String msg = owner+ ":" +minutetoken + "in" + Time + "can not be parsed as minutes.";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
if (tokens = = 3) {
String Secondtoken = St.nexttoken ();
try {
seconds = Integer.parseint (Secondtoken);
catch (NumberFormatException nfe) {
String msg = owner+ ":" +secondtoken + "in" + Time + "can not be parsed as seconds.";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
}
if (Hours < 0 | | hours > 23) {
String msg = owner+ ":" + "Specified Hours:" + hours + ". Number of hours must being in the [0..23] range. ";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
if (Minutes < 0 | | minutes > 59) {
String msg = owner+ ":" + "Specified minutes:" + minutes + ". Number of minutes must being in the [0..59] range. ";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
if (seconds < 0 | | seconds > 59) {
String msg = owner+ ":" + "Specified seconds:" + seconds + ". Number of seconds must being in the [0..59] range. ";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
return true;
}
The regular method is:
public static Boolean Timecheck (string time, string owner) {
Checks whether the time string times satisfies the format "HH:mm:ss" and returns False if the corresponding message is not satisfied
String regex = "([01]\\d) | ( 2[0-3]): [0-5]\\d (: [0-5]\\d)];
if (!time.matches (regex)) {
String msg = owner+ ":" + "Time is INVALID.";
Messagedialog.showerror (Controller.getmainframe (), MSG);
return false;
}
return true;
}
It's really good and powerful!! However, the above regular "((2[0-3)) | ( [01]\d)]: [0-5]\d (: [0-5]\d)?] Realize incredibly can't match "3:3:3", depressed!
Change the positive to "((2[0-3)) | ( [0-1]?\d)]: [0-5]?\d (: [0-5]?\d)?] Can match "3:3:3" this kind of, but "3:65:34" obviously is wrong, but again match two come, dizzy!
Change the positive to "((2[0-3)) | ( [0-1]?\d): [0-5]?\d (: [0-5]?\d)] can match "3:3:3", but also can correctly judge "3:65:34", but can't judge "3:34" this format. Oh ~ ~ ~ ~ ~