CODEWITHSUNDEEP
java
user663724
user663724

Reputation:

How to remove some characters from a String

I am getting a date in this format:

2011-05-23 6:05:00

How can I obtain only 2011-05-23 from this string?

Upvotes: 2

Views: 2025

Answers (10)

Muhammad Anjum Kaiser
Muhammad Anjum Kaiser

Reputation: 4087

Here you go:

import java.*;
import java.util.*;
import java.text.*;

public class StringApp {
    public static void main(String[] args)
    {
        String oldDate = "2011-05-23 6:05:00";
        String dateFormat = "yyyy-MM-dd";
        try {
            SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
            Calendar cl = Calendar.getInstance();
            cl.setTime(sdf.parse(oldDate));
            String newDate = sdf.format(cl.getTime());
            System.out.println(newDate);
        } 
        catch (ParseException ex) { 
        }
    }
}

Upvotes: 0

Peter Lawrey
Peter Lawrey

Reputation: 533890

Another answer which uses a regex.

String dateTime = "2011-05-23 6:05:00";
String date = dateTime.split(" ")[0];

Upvotes: 0

Khoyendra Pande
Khoyendra Pande

Reputation: 1649

You can use -

String arg="2011-05-23 6:05:00";
String str=arg.substring(0,arg.indexOf(" "));

Upvotes: 1

Kaj
Kaj

Reputation: 10959

Lots of answers, but no one had used regexp so far, so I just had to post an answer with regexp. 

String date = "2011-05-23 6:05:00";
System.out.println(date.replaceFirst("\\s.*", ""));

Upvotes: 0

OMG Ponies
OMG Ponies

Reputation: 332791

Using SimpleDateFormat:

parser = new SimpleDateFormat("yyyy-MM-dd k:m:s", locale);
Date date;

try {
  date = (Date)parser.parse("2011-05-23 6:05:00");
} catch (ParseException e) {
}

formatter = new SimpleDateFormat("yyyy-MM-dd");
s = formatter.format(date);

Also:

Upvotes: 4

Rudy
Rudy

Reputation: 7044

Simplest way :

String str="2011-05-23 6:05:00"; str =str.subString(0,10);

Upvotes: 0

Fender
Fender

Reputation: 3055

str = "2011-05-23 6:05:00"
str = str.substring(0,str.indexOf(" "));

Upvotes: 0

Kelan Poten-Coyle
Kelan Poten-Coyle

Reputation: 305

Well an ineffective, but brute force method would be to say

String s = "2011-05-23 6:05:00";
String t = s.substring(0,s.length-7);

Or whatever the case should be

Upvotes: 0

Jigar Joshi
Jigar Joshi

Reputation: 240996

Standard way would be use of SimpleDateFormat

You can also accomplish it using String operation as follows

String result = str.substring(0,str.indexOf(" "));

Upvotes: 1

Jon Skeet
Jon Skeet

Reputation: 1504092

You could just take the index of the first space and use substring:

int firstSpace = text.indexOf(' ');
if (firstSpace != -1)
{
    String truncated = text.substring(0, firstSpace);
    // Use the truncated version
}

You'd need to work out what you wanted to do if there weren't any spaces.

However, if it's meant to be a valid date/time in a particular format and you know the format, I would parse it in that format, and then only use the date component. Joda Time makes it very easy to take just the date part - as well as being a generally better API.

EDIT: If you mean you've already got a Date object and you're trying to format it in a particular way, then SimpleDateFormat is your friend in the Java API - but again, I'd recommend using Joda Time and its DateTimeFormatter class:

DateTimeFormatter formatter = ISODateTimeFormat.date();
String text = formatter.print(date);

Upvotes: 6

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