Extract an Email From a String literal

[Steven Ho]

Hello all,
I have the code below,

<font size="2"> 
String text = " this is email: [e-mail] ";
</font>

The length of string may change often, more character may appear at the start or end sometime as the variable is modified, but the "this is email:" part exist all the time.
There is always 1 valid email only inside the string.
How do I extract the email from the string? Please provide code samples.
Thanks all.
[ September 09, 2003: Message edited by: Steven Ho ]

[Dirk Schreckmann]

What have you tried so far? Or what have you considered trying? Are you familiar with regular expressions? They might prove useful to you.
Feel free to post code that you've been working on.

[Steven Ho]

Hello,

bounced_email = mesg.substring(mesg.indexOf("this is email:"));
bounced_email = bounced_email.substring(0, bounced_email.indexOf("\n"));
bounced_email = bounced_email.substring("this is email:".length());
bounced_email = bounced_email.trim();

sorry, I forgot to mention the last character is always line break.
Thanks all for replying.

[Tom Hill]

String Tokenizer could be useful for that.

[Dirk Schreckmann]

Here's an excerpt from an app I developed this summer that you might find useful.

  public static boolean isValidEmail(String email)
  {
    Pattern emailPattern = Pattern.compile(
        "^([a-zA-Z0-9_\\-\\.])+@(([0-2]?[0-5]?[0-5]\\.[0-2]?[0-5]?[0-5]" + 
        "\\.[0-2]?[0-5]?[0-5]\\.[0-2]?[0-5]?[0-5])|((([a-zA-Z0-9\\-])+\\.)" +
        "+([a-zA-Z\\-])+))$");
    //pattern source: <a href="http://regxlib.com/REDetails.aspx?regexp_id=26" target="_blank" rel="nofollow">http://regxlib.com/REDetails.aspx?regexp_id=26</a>
    Matcher matcher = emailPattern.matcher(email);
    return matcher.find();
  }

[Michael Dunn]

Try this

public class testing
{
  public static void main(String[] args) throws Exception
  {
    String text = "some opening text, then this is email:[e-mail] end line";
    String bits[] = text.split("this is email:");
    bits[1] = bits[1].trim();
    int pos = bits[1].indexOf(" ");
    String emailAddress;
    if(pos > -1) emailAddress = bits[1].substring(0,pos);
    else emailAddress = bits[1];
    System.out.println(emailAddress);
    System.out.println(emailAddress.length()); //check trim() working
    System.exit(0);
  }
}