HackerRank Pattern Syntax Checker solution in java

In this HackerRank Pattern syntax Checker problem in the java programming language, Using Regex, we can easily match or search for patterns in a text. Before searching for a pattern, we have to specify one using some well-defined syntax.

In this problem, you are given a pattern. You have to check whether the syntax of the given pattern is valid.

HackerRank Pattern Syntax Checker problem solution in java programming.

import java.util.Scanner;
import java.util.regex.*;

public class Solution
{
   public static void main(String[] args){
      Scanner in = new Scanner(System.in);
      int testCases = Integer.parseInt(in.nextLine());
      while(testCases>0){
         String pattern = in.nextLine();
          try{
              Pattern p = Pattern.compile(pattern);
              System.out.println("Valid");
          }catch(Throwable t){
              System.out.println("Invalid");
          }
          testCases--;
             //Write your code
      }
   }
}

A solution in java8 programming.

import java.util.Scanner;
import java.util.regex.*;

public class Solution
{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int testCases = Integer.parseInt(in.nextLine());
		while(testCases>0){
			String pattern = in.nextLine();
          	//Write your code
              try {
                Pattern.compile(pattern);
                System.out.println("Valid");
            } catch (PatternSyntaxException e) {
                System.out.println("Invalid");
            }
            testCases--;
		}
	}
}