Regular Expressions

[jeffM]

If I wanted to search a string such as the one shown below, for these
substrings TAG001 ,TAG002,TAG003 using regular expressions , how would I do
it?
String strToSearch="VCE1246KYTAG001ZX178TAG002DHU7749TAG003

jeff

 

[Daqian Yang]

Cover this string to a char array, and use a for loop to search tagxxxx

 

[Kevin Henry]

Cover this string to a char array, and use a for loop to search tagxxxx

That is clearly not answering his question. He wanted to use Regular
Expressions.
If you use the Pattern and Matcher classes in java.util.regex it can be done
like this:

Pattern p = Pattern.compile("(TAG0001)|(TAG0002)|(TAG0003)");
// or "TAG\d{4}" if you simply want any four digit
number afterwards
Matcher m = p.matcher(strToSearch);
if (m.matches()) {
// it matched
} else {
// it didn't
}

For more information see:
http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/package-summary.html

Kevin

 

[Robert Olofsson]

: Pattern p = Pattern.compile("(TAG0001)|(TAG0002)|(TAG0003)");
: // or "TAG\d{4}" if you simply want any four digit
: number afterwards
: Matcher m = p.matcher(strToSearch);
: if (m.matches()) {

Do you not mean
while (m.find ()) {
// do something
}

instead? matches tries to match the full string...

/robo