Match a part of String using Reg Exp

[dmjpro]

String input = "Mozila";
System.out.println(Pattern.matches("^Moz")); //returns false
System.out.println(Pattern.matches("^Moz.+")); //returns true
 

Can't i match part of the string using Reg Exp?

[jkmyoung]

Interesting. I've never seen that before. Are you using capturing parentheses to get part of the match?
Assuming you wanted .* as opposed to .+

[ahmee]

there are different ways to go through a program....so go for the best u knwn

[ahmee]

this is the code...

import java.util.regex.*;
class Strtok {

public static void main(String [] args) {
String s= "Why John Smith and Alan Smith and Nick gates";
if(s.matches("Why John Smith and Alan Smith and Nick gates"))
{
// System.out.println(s.substring(4,14),s.substring(1 5,20));
String substring = s.substring(3,15);
String substring2 = s.substring(19,29);
String substring3 = s.substring(34,44);
System.out.println(substring);
System.out.println(substring2);
System.out.println(substring3);
}
}
}

output

John Smith
Alan Smith
Nick gates

[dmjpro]

What does your code mean to me?

[jkmyoung]

Probably misposted from a similar but different thread.
Assuming you are using a matcher, I would use parentheses to capture the input.

String input = "Mozila"; 
Pattern pattern = Pattern.compile("^(Moz).*");
Matcher matcher = pattern.matcher(input);
while (matcher.find()){
            System.out.println(matcher.group(1)); //prints out Moz
}

Notice the use of 1 to get the first group as opposed to the entire match. Not entirely sure if this is what you want, but hope it leads you in the right direction.