Hackerrank – Java Solution – Pattern Syntax Checker Solution

Hackerrank - Java Solutions Hackerrank Online Judge Solution

Hackerrank – Java Solution – Pattern Syntax Checker Solution

HackerRank Problem Solution

Problem Name –  Pattern Syntax Checker
Problem Link –   Pattern Syntax Checker 
Level – String
Point – 20

Java Code

import java.util.Scanner;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

public class Solution {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int testCases = scan.nextInt();
scan.nextLine();

// If a PatternSyntaxException is not thrown by Pattern.compile, the regular expresion is valid
while (testCases-- > 0) {
String pattern = scan.nextLine();
try {
Pattern.compile(pattern);
System.out.println("Valid");
} catch (PatternSyntaxException exception) {
System.out.println("Invalid");
}
}
scan.close();
}
}

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