regular expression

[ehsansad]

Hello,
How do you use String.matcher() to catch just a Word. for example if you have this

SCHEMA XXX_TO_BE FOR SOME OTHER THING. SCHEMA_VER

how do you match only SCHEMA and not SCHEMA_VER. I have tried \bSCHEMA\b, \s'SCHEMA\s+ without luck and only \s*SCHEMA.* works which matches both

regards,
ehsan

[eRaaaa]

I have read your post four times, but still do not understand exactly what do you want :D

Can you explain it again, maybe with an other example? Sorry ;/

String.matcher - do you mean matches? But this only tells you whether or not the string matches the given regular expression and will not catch a word :confused:

[Shoss]

I think he's also looking for regular expression which would only match SCHEMA as a word by itself. In which case, \bSCHEMA\b should work fine.

[ehsansad]

yes matches() is correct.
say the string is

String s = "MYSTRING and some other stuff like will be in this line.";

I want to do some stuff if and only if "MYSTRING" is in the line. so

if(s.matches("MYSTRING") {
\\do something here
}

I have tried
s.matches("\bMYSTRING\b") and s.matches("//s*MYSTRING//s+") without any luck. so I want to know how can i match "MYSTRING".

[Shoss]

You'll want to look at pattern and matcher to do the regular expressions you want. String's matches() method will see if the regex matches the entire string, not just a word. \bMYSTRING\b should work if you use pattern and matcher.

[eRaaaa]

String.contains do what you want or?
To your problem in the first post, what do you mean with
"only \s*SCHEMA.* works which matches both" ?

.* is greedy, so that this should find the string only once or?

\s*SCHEMA.*? should find it twice

But you can mark the start and end of the string with \b
--> \s*\bSCHEMA\b.* - do you mean that?

I don`t understand your problem, sorry :D

[ehsansad]

Thanks a lot, fixed by using the \s*\bSCHEMA\b\s+.

[Melssj5]

you should try indexOf instead of matches. The matches method tells you if the String matches a regular expression, the indexOf can tell you if the String has a substring on it! for example

if (String.indexOf("secondString">0) {
77then add your desired code.
}

I guess that the matches method is not what you are looking for!

[eRaaaa]

you should try indexOf instead of matches. The matches method tells you if the String matches a regular expression, the indexOf can tell you if the String has a substring on it! for example

if (String.indexOf("secondString">0) {
77then add your desired code.
}

Thats the same as I said before:

String.contains .....

-->

    public boolean contains(CharSequence s) {
        return indexOf(s.toString()) > -1;
    }

:cool: