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  1. import java.util.regex.*;
  2. import java.util.*;
  3.  
  4. class T {
  5.     public static void main(String[] args) {
  6.         String carID; 
  7.  
  8.         carID = "J1234";
  9.         System.out.println(carID.matches("^[A-Za-z]\\d{4}$") ? "match": "does not match");
  10.  
  11.         carID = "J123456";
  12.         System.out.println(carID.matches("^[A-Za-z]\\d{4}$") ? "match": "does not match");
  13.     }
  14. }
  15.  
Success #stdin #stdout 0.07s 380160KB
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stdin
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Standard input is empty
stdout
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match
does not match
https://ideone.com/RxXXsh
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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