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How to print all the characters of a string using regular expression in Java?
The meta character "." matches all the characters, to print all the characters using the regular expressions −
Compile the regular expression using the compile() method.
Create a Matcher object using the matcher() method.
Find the matches using the find() method and for every match print the matched contents (characters) using the group() method.
Example
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexExample {
public static void main( String args[] ) {
//Regular expression to match a string of non-word with length 2 to 6
String regex = ".";
Scanner sc = new Scanner(System.in);
System.out.println("Enter your input string: ");
String input = sc.nextLine();
//Creating a Pattern object
Pattern p = Pattern.compile(regex);
//Creating a Matcher object
Matcher m = p.matcher(input);
while(m.find()) {
System.out.println(m.group());
}
}
}Output
Enter your input string: This is a sample text T h i s i s a s a m p l e t e x t
Updated on: 10-Jan-2020
1K+ Views
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