Regular Expressions and Strings

Basically I have a program with two text edit boxes and a button on it.  The user can enter a piece of text into the first edit box and a regular expression into the second edit box.

When the user presses the button I want it to process the regular expression against the text that the user entered.  

Is there any way to implement this using Java ?

I would be grateful for all advice offered regarding this.

Thanks in advance

John Clarke
johnclarkeAsked:
Who is Participating?
 
Venci75Connect With a Mentor Commented:
java 1.4 have classes for processing regular expressions

try this sample code:
import java.util.regex.*;
...
System.out.println("" + Pattern.compile("[0-9]").matcher("1").matches());
System.out.println("" + Pattern.compile("[0-9]").matcher("d").matches());
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Andrey_KulikCommented:
Hi
in JDK 1.4  see package java.util.regex.*
in additional see:
http://jakarta.apache.org/regexp/index.html

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CSuvendraCommented:
Implementation of Regular Expressions under GNU license

http://www.cacas.org/java/gnu/regexp/
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master_pCommented:
See http://jakarta.apache.org/regexp/index.html

import org.apache.oro.text.regex.*;

public class Tester
{
    public boolean matches(
        String aRegularExpression,
        String aString)
    throws Exception
    {
        Perl5Compiler myCompiler = new Perl5Compiler();
       
        Pattern myPattern = myCompiler.compile(
                    aRegularExpression,
                    Perl5Compiler.DEFAULT_MASK);

        PatternMatcher myMatcher = new Perl5Matcher();

        return myMatcher.matches(aString, myPattern);
    }

    public static void main(String anArg[])
    throws Exception
    {
        Tester myTester = new Tester();
        System.out.println(myTester.matches(anArg[0], anArg[1]));
    }
}
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johnclarkeAuthor Commented:
Although it is a good answer I prefer to use the native classes provided with JDK.  Sorry.

John
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johnclarkeAuthor Commented:
Thanks for pointing me to where I wanted to go.

John
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