How to implement .group() Regex in Java

Question

I have a String :

<E-25-Lorem Ipsum is simply dummy text-34>

I want to get the string "Lorem Ipsum is simply dummy text" and assign it to a variable "msg" so that I can use it else where.

Here is my code :

    String pattern = "([A-Za-z_ ])\\w+";
    //Create a Pattern object
    Pattern r = Pattern.compile(pattern);

    //Matcher Object
    Matcher m = r.matcher(frame);
    String msg = new String();

    if (m.find( )){
        msg = m.group(0);
    }

System.out.println(msg);

System.out.println(msg) on prints out the "Lorem", instead it is meant to print "Lorem Ipsum is simply dummy text".

Wiktor Stribiżew · Accepted Answer · 2015-12-11 12:26:21Z

3

You just need to apply a + quantifier to [A-Za-z_ ] character class to match 1 or more occurrences:

([A-Za-z_ ]+)\w+
           ^

See regex demo

Depending on whether you need to capture the first letter or not, you can also consider using

([A-Za-z_ ])\w+(?:\s+\w+)*

See another regex demo

answered Dec 11, 2015 at 12:26

Wiktor Stribiżew

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2 Comments

Wiktor Stribiżew Over a year ago

Just do not forget to use double backslashes when using these regexps in Java code.

Wiktor Stribiżew Over a year ago

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