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Subexpression/Meta-character " [^ ...] Match any single character, not the parentheses.
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 w3codebox"; 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 Result
Number of matches: 21
The following Java program accepts from the user5a string, and print strings that do not contain English letters/words.
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(); } //Create a Pattern object Pattern p = Pattern.compile(regex); System.out.println("strings that do not contain English alphabet: "); for(int i=0; i<5;i++) { //Create a Matcher object Matcher m = p.matcher(input[i]); if(m.find()) { System.out.println(m.group()); } } } }
Output Result
Enter 5 input strings: 1234*5 *&% sample test data23 strings that do not contain English alphabet: 1234*5 *&%