![Trending Articles on Technical and Non Technical topics](/images/trending_categories.jpeg)
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to search for a pattern in a Java string?
Java provides the java.util.regex package for pattern matching with regular expressions. You can then search for a pattern in a Java string using classes and methods of this packages.
Example
import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexMatches { public static void main( String args[] ) { String line = "This order was placed for QT3000! OK?"; String pattern = "(.*)(\d+)(.*)"; Pattern r = Pattern.compile(pattern); Matcher m = r.matcher(line); if (m.find( )) { System.out.println("Found value: " + m.group(0)); System.out.println("Found value: " + m.group(1)); System.out.println("Found value: " + m.group(2)); }else{ System.out.println("NO MATCH"); } } }
Output
Found value: This order was placed for QT3000! OK? Found value: This order was placed for QT300 Found value: 0
Advertisements