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help with regular expressions

Hi,

I require some help with the regular exp in java.

I have a String say
String test="regular +expr + java+ example";

I will get the String as req parameter.
If I find space before and after " + " I will have to remove that and replace that to test="regular +expr+java+example";(without any spaces)
if there is space after "+ " then the String should become test="regular +expr+java+example";(without any spaces)
If I have space only before " +"it should stay as it is test="regular +expr+java+example";

The only condition when the "+" will remain unaltered is when it is preceded by space(s) and immediately followed by text with no space in between.i.e(regular +expr).

Please help me.

Thanks.

colr__

if (!test.contains(" +"))
test.removeAll(" ");

enachemc

search for \+\s+
replace with +

You might be required to escape the "\" character in Java.

colr__

In fact it might be this:

if (!test.contains(" +") && !test.contains("+ "))
test.removeAll(" ");

Is this what you are looking for?

Mayank S

And since String is immutable:

String newTest = test.removeAll ( " " ) ;

CEHJ

test.replaceAll("\\+\\s*", "\\+");

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CEHJ

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CEHJ

(without the final bracket ;-))

SOLUTION

enachemc

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CEHJ

>>there might be a lot of useless replaces

I doubt it, as that would be fairly incompetent of 'them' to try to replace a token with an identical one, but you're right - it'd be better to err on the safe side

ZOOMAY

ASKER

Thanks a lot for the help.

CEHJ

:-)