English | 简体中文 | 繁體中文 | Русский язык | Français | Español | Português | Deutsch | 日本語 | 한국어 | Italiano | بالعربية
Subexpression/Regular expression character " \t matches tab spaces.
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 = "\\t"; Scanner sc = new Scanner(System.in); System.out.println("Enter a string: "); String input = sc.nextLine(); Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count ++; } System.out.println("Number of tab spaces: ");+count); } }
Output Result
Enter a string: This is a sentence with tab spaces Number of tab spaces: 6
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 = "\\t"; Scanner sc = new Scanner(System.in); System.out.println("Enter a string: "); String input = sc.nextLine(); Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; String result = ""; while(m.find()) { result = m.replaceAll("\t"); } System.out.println("Result: "+result); } }
Output Result
Enter a string: This is a sentence with tab spaces Result: This is a sentence with tab spaces