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replace method

Posted on 2002-04-16
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Last Modified: 2010-03-31
Is there a method available that i can use that will find all the carridge returns and replace them with a <br> and detect all double (2x) carridge returns and replace them with a <p>?

what i want to do is detect these in a block of text that i extract from my database and format it when it is rendered to the jsp. Pretty much the same way this page is formatted :D.

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Question by:dgeorgio
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LVL 92

Expert Comment

by:objects
ID: 6946201
Doesn't exist, you'll need to write it yourself. Something like the following, though I haven't tested it so they'res sure to be a bug or two:

public String replaceAll(String s, String a, String b)
{
   StringBuffer result = new StringBuffer();
   int pos = 0;
   int i;
   while (-1!=(i=s.indexOf(a, pos)))
   {
     result.append(s.substring(pos, i));
     result.append(b);
     pos = i + b.length() + 1;
   }
   result.append(s.substring(pos));
   return result.toString();
}
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Expert Comment

by:objects
ID: 6946373
Seen a bug already :)

Should be adding length of a to pos, not b.

    pos = i + a.length() + 1;
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Author Comment

by:dgeorgio
ID: 6946638
Am i able to search for carridge returns and linefeeds as a string as per your example?
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LVL 92

Accepted Solution

by:
objects earned 100 total points
ID: 6946654
Should just be able to use control characters, like:

replace(s, "\r\n", "<p>);
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Author Comment

by:dgeorgio
ID: 6946670
kewl, thought so. I will give it a go tonight.
ta muchly
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Author Comment

by:dgeorgio
ID: 6947784
Thanx muchly object. Works a treat.

I have also found another solution that you may be interested in. String taglib has a replace tag that does the same as your supplied solution. might be another one to keep in mind.

http://jakarta.apache.org/taglibs/doc/string-doc/index.html#reference

<str:replace replace="" with=""></str:replace>

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Expert Comment

by:objects
ID: 6948965
Happy to hear it solved your problem :-)

http://www.objects.com.au
Brainbench MVP for Java 1
http://www.brainbench.com
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