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
Role of Matcher.find(int) method in Java Regular Expressions
The Matcher.find(int) method finds the subsequence in an input sequence after the subsequence number that is specified as a parameter. This method is available in the Matcher class that is available in the java.util.regex package.
The Matcher.find(int) method has one parameter i.e. the subsequence number after which the subsequence is obtained and it returns true is the required subsequence is obtained else it returns false.
A program that demonstrates the method Matcher.find(int) in Java regular expressions is given as follows −
Example
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Demo {
public static void main(String args[]) {
Pattern p = Pattern.compile("apple", Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher("apple APPLE Apple aPPLE");
System.out.println("apple APPLE Apple aPPLE");
m.find(6);
System.out.println(m.group());
System.out.println("
apple APPLE Apple aPPLE");
m.find(12);
System.out.println(m.group());
System.out.println("
apple APPLE Apple aPPLE");
m.find(0);
System.out.println(m.group());
}
}The output of the above program is as follows −
apple APPLE Apple aPPLE APPLE apple APPLE Apple aPPLE Apple apple APPLE Apple aPPLE apple
Now let us understand the above program.
The subsequence in the input sequence "apple APPLE Apple aPPLE" after the subsequence number 6, 12 and 0 is found using the find(int) method and the required result is printed. A code snippet which demonstrates this is as follows −
Pattern p = Pattern.compile("apple", Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher("apple APPLE Apple aPPLE");
System.out.println("apple APPLE Apple aPPLE");
m.find(6);
System.out.println(m.group());
System.out.println("
apple APPLE Apple aPPLE");
m.find(12);
System.out.println(m.group());
System.out.println("
apple APPLE Apple aPPLE");
m.find(0);
System.out.println(m.group());
171 Views
