How to get the hour:minuts:seconds using java

Question

I have table xydata
here i get the gsTime like this 2010-04-21 10:58:40
the above time i want to get only 10:58:40
how to write the java for this
please help me
Thanks in Advance

Answer 1

Problem of this sort cry out for using regular expressions. It is what they were invented for. If the OP wanted the whole date parsed into a java.util.Date then it would be a different matter and SimpleDateFormat would be the way to go but extracting part of a string is what regular expressions are best at.
In this case, even a regular expression approach is far too complex. Which of the following do you consider the most appropriate ?
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Sabre20100508
    public static void main(String[] args) throws Exception
        String[] lines =
            "2010-04-21 11:01:35",
            "2010-04-21 11:01:58",
            "2010-04-21 11:02:21",
            "2010-04-21 11:02:42",
            "2010-04-21 11:03:28",
            "2010-04-21 11:03:51"
            Pattern p = Pattern.compile("(?<= )\\d{2}:\\d{2}:\\d{2}");
            System.out.println("Method 1 :-");
            for (String line : lines)
                Matcher m = p.matcher(line);
                if (m.find())
                    System.out.printf("    [%s]\n", m.group());
            Pattern p = Pattern.compile("\\d{4}-\\d{2}-\\d{2} (\\d{2}:\\d{2}:\\d{2})");
            System.out.println("Method 2 :-");
            for (String line : lines)
                Matcher m = p.matcher(line);
                if (m.matches())
                    System.out.printf("    [%s]\n", m.group(1));
            System.out.println("Method 3 :-");
            for (String line : lines)
                String[] splitLIne = line.split(" ", 2);
                System.out.printf("    [%s]\n", splitLIne[1]);
            System.out.println("Method 4 :-");
            for (String line : lines)
                int index = line.lastIndexOf(" ");
                System.out.printf("    [%s]\n", line.substring(index + 1));
            System.out.println("Method 5 :-");
            SimpleDateFormat parser = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
            for (String line : lines)
                Date date = parser.parse(line);
                System.out.printf("    [%s]\n", formatter.format(date));
            System.out.println("Method 6 :-");
            for (String line : lines)
                System.out.printf("    [%s]\n", line.replaceAll("[^ ]* ", ""));
}My vote goes to method 4!