Tuesday 9 January 2018

How to use study methods of matcher class | Java Regex | Java Regular Expressions | Regex in java


Click here to watch on Youtube :
https://www.youtube.com/watch?v=FyPlgOYT0LA&list=UUhwKlOVR041tngjerWxVccw

RegexDemo.java

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 *
 * Study Methods
 *
 */

public class RegexDemo
{

    public static void main(String[] args)
    {
        Pattern pattern = Pattern.compile("dog");
        Matcher matcher = pattern.matcher("dog is friendly");

        /*
         * Study methods go through the input String and return a
         * boolean indicating whether or not the pattern is found.
         * Commonly used are matches and lookingAt methods.
         *
         * The matches and lookingAt methods both attempt to match an
         * input sequence against a pattern. The difference, is that
         * matches requires the entire input sequence to be matched,
         * while lookingAt does not.
         */

        System.out.println(matcher.lookingAt());
        System.out.println(matcher.matches());
    }

}

Output

true
false

Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/RegexDemo_study_methods.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/RegexDemo_study_methods

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/07583a7ceb95d30e4d41a36362b049aa5d1ec520/BasicJava/RegexDemo_study_methods/?at=master

See also:
  • All JavaEE Videos Playlist
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  • All JAVA EE Links
  • Servlets Tutorial
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  • JDBC Tutorial
  • Java Collection Framework Tutorial
  • JAVA Tutorial
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