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
Regular Expression "[^...]" construct in Java
The subexpression/metacharacter “[^...]” matches any single character, not in brackets.
Example 1
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class SpecifiedCharacters {
public static void main( String args[] ) {
String regex = "[^hwtyoupi]";
String input = "Hi how are you welcome to Tutorialspoint";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(input);
int count = 0;
while(m.find()) {
count++;
}
System.out.println("Number of matches: "+count);
}
}Output
Number of matches: 21
Example 2
The following Java program accepts 5 strings from the user and prints the strings/words that do not contain the English alphabet.
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexExample {
public static void main( String args[] ) {
String regex = "^.*[^a-zA-Z].*$";
Scanner sc = new Scanner(System.in);
System.out.println("Enter 5 input strings: ");
String input[] = new String[5];
for (int i=0; i<5; i++) {
input[i] = sc.nextLine();
}
//Creating a Pattern object
Pattern p = Pattern.compile(regex);
System.out.println("strings that does not contain English alphabet: ");
for(int i=0; i<5;i++) {
//Creating a Matcher object
Matcher m = p.matcher(input[i]);
if(m.find()) {
System.out.println(m.group());
}
}
}
}Output
Enter 5 input strings: 1234*5 *&% sample test data23 strings that does not contain English alphabet: 1234*5 *&%
Updated on: 19-Nov-2019
109 Views
Advertisements