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  1. import java.util.Scanner;
  2.  
  3. import java.util.regex.Pattern;
  4.  
  5. public final class Main {
  6.  
  7.   public static void main(final String[] argv) {
  8.     final Scanner input = new Scanner(System.in);
  9.     final Pattern pattern = Pattern.compile("\\d+\\.\\d{2}?");
  10.     while (input.hasNext()) {
  11.       System.out.println((input.hasNext(pattern) ? "good" : "bad") + ": " + input.nextDouble());
  12.     }
  13.   }
  14. }
Success #stdin #stdout 0.1s 216128KB
comments (?)
stdin
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2.00
3.14159
2
stdout
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good: 2.0
bad: 3.14159
bad: 2.0
https://ideone.com/OzLGE
language:
Java (12.0.1)
created:
11 years ago
visibility:
public

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