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  1. import java.util.*;
  2. import java.lang.*;
  3.  
  4. class Main
  5. {
  6.     public static void main(String[] args){
  7.         final String pattern = "\\d{3}([-. ])?\\d{3}([-. ])?\\d{4}";
  8.         Scanner sc = new Scanner(System.in);
  9.         String str = sc.nextLine();
  10.         System.out.println(str.matches(pattern));
  11.     }
  12. }
Success #stdin #stdout 0.1s 380608KB
comments (?)
stdin 
444 444 4444
stdout 
true
https://ideone.com/O3Hu0Z
language:
Java (12.0.1)
created:
12 years ago
visibility:
public

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