[HackerRank] Java Syntax Checker

https://www.hackerrank.com/challenges/pattern-syntax-checker/problem?isFullScreen=true

compile()

Compiles the given regular expression into a pattern.
Parameters:
regex - The expression to be compiled
Throws:
PatternSyntaxException - If the expression’s syntax is invalid

Source

Solution

import java.io.*;
import java.util.*;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

public class Solution {

    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        int testCases = Integer.parseInt(bufferedReader.readLine());

        while (testCases > 0) {
            String pattern = bufferedReader.readLine();
            try {
                Pattern.compile(pattern);
                System.out.println("Valid");
            } catch (PatternSyntaxException e) {
                System.out.println("Invalid");
            }

            testCases--;
        }
    }
}