Help in Regular expression using java

I want to do pattern matching using java.

My string is (a<b)

I tried with the following patterns.
[(][a][<][)]$

and

[(][a][/<][)]$

but these patterns doesn't match.
can any one tell me how to match operators like < , >, <=, >=, + ..


Thank u..

 

Try this

Code:

\([a]<[b]\)

Operators are matched like normal characters, for more info try http://regularexpressions.info

 

if(String.matches("\([a]<\")

I am getting error: unrecognized escape sequence.

 

After that also, I am getting the same error

if(strng.matches("\([a]<\)")

 

Here's an example of using Regular Expressions in Java

Code:

// Compile regular expression
    String patternStr = "b";
    Pattern pattern = Pattern.compile(patternStr);
    
    // Determine if there is an exact match
    CharSequence inputStr = "a b c";
    Matcher matcher = pattern.matcher(inputStr);
    boolean matchFound = matcher.matches(); // false
    
    // Try a different input
    matcher.reset("b");
    matchFound = matcher.matches();         // true
    
    // Determine if pattern matches beginning of input
    matchFound = matcher.lookingAt();       // false

 

Thank u sir. It's working.

 

Hi

I need to check for a PO Box addresses in a string. I should not allow a pobox in a address Line. For that I need a pattern and willl match this pattern with my string

Ex:***** something like this ******
Pattern poBoxPattern = Pattern.compile("\\bp\\s*\\d") ....
Matcher matcher = poBoxPattern.matcher(locationAddressStreet);
if(matcher.find()){

}


So, could anyone help me with making the pattern.
My pattern should recognize sub strings like...
1. po 123 ( meaning: po followed by any integer/integers )
2. p o 123
3. p.o. 123
4. p. o. 123
5. po box
6. po box
7. p o box
8. p o 123

Note: "po sometext" or "p o sometext" should not be recognized.

Any help is truly appreciated.

Thanks
Sai

 

I did. Thanks, for the suggestion.