Solved

Java Replace String

Posted on 2010-09-12
8
351 Views
Last Modified: 2013-12-29
I want to do find and replace. For example we have a string with something like .
"  select * from table a, table b where
a.id = b.id
/*<input>
and
a.input = ?
<input>*/   "

Now i want tofind all /*<input>  and <input>*/ and replace it with blank space or remove it.
0
Comment
Question by:shetty01
8 Comments
 
LVL 40

Expert Comment

by:gurvinder372
ID: 33657279

String str="select * from table a, table b where a.id = b.id /*<input> and a.input = ? <input>*/  ";
System.out.println(str.replace("<input>","\\s"));
0
 
LVL 40

Expert Comment

by:gurvinder372
ID: 33657304
String str="select * from table a, table b where a.id = b.id /*<input> and a.input = ? <input>*/  ";
System.out.println(str.replaceAll("<input>","\\s"));
0
 
LVL 1

Expert Comment

by:vkphoenixfr
ID: 33660313
Use The commons library.
In your case, commons-lang, and it's StringUtils class :

StringUtils.replace(originalString, stringToReplace, stringReplacement);

Replaces all occurences of stringToReplace in originalString by stringReplacement.

So if you want to remove <input> by nothing, th line goes like that :
String newSqlQuery = StringUtils.replace(sqlQuery, "<input>", "");

More generally, have a look at commons library, they are really usefull (commons-lang, commons-io, commons-dbcp, and so on...) Go to apache commons website to see how many they have.

It allows  you to use a well written, tested and proven to be efficient set of very usefull functions.

Who nowadays closes an IO stream without using IOUtils.closeSilentlt(ioStream);     :)

Phoenix
0
 
LVL 16

Expert Comment

by:Valeri
ID: 33660331
Does the /*<input> and <input>*/ are considered to be something like start and end tag? I think they are, so try this, because '*' must be avoided in this way :
System.out.println(str.replaceAll("/\\*<input>","").replaceAll("<input>\\*/",""));
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 86

Expert Comment

by:CEHJ
ID: 33660843
Try the following:
s = s.replaceAll("(?sm)(/\\*<input>.*?<input>\\*/)", "");	

Open in new window

0
 
LVL 86

Expert Comment

by:CEHJ
ID: 33660852
btw, the dup question you posted on this should be deleted
0
 

Author Comment

by:shetty01
ID: 33664250
I found the solution. Somehow i posted it twice since first time my post did not work.  I got solution in my other post. thanks for help.
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 500 total points
ID: 33664323
Please post then the code you're actually using. (The code you refer to won't work as is)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
This video teaches viewers about errors in exception handling.

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now