Area of a Parallelogram-Hacker Rank Problem.

You are given a class Solution with a main method. Your task is to complete the given code so that it outputs the area of a parallelogram with breadth  and height . You should read the variables from standard input.

If  or  , the output should be "java.lang.Exception: Breadth and height must be positive" without quotes.

Input Format

Two lines of input. First line contains : breadth of parallelogram. Next line contains : height of parallelogram.

Constraints 
 

Output Format

If both values are greater than zero, then the main method must output the area of the parallelogram; else, print "java.lang.Exception: Breadth and height must be positive" without quotes.

Sample input 1

1
3

Sample output 1

3

Sample input 2

-1
2

Sample output 2

java.lang.Exception: Breadth and height must be positive

Solution :

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {
//Write your code here
static boolean flag=false;
static int B,H;
static{
 Scanner in= new Scanner(System.in);
 B=in.nextInt();
 H=in.nextInt();
 try{
  if(B<=0||H<=0)
   throw new Exception("Breadth and height must be positive");
  else{
   flag= true;
  }
 }
 catch(Exception e){
  System.out.println(e);
 }
}                                                                   public static void main(String[] args){
  if(flag){
   int area=B*H;
   System.out.print(area);
  }
  
 }//end of main

}//end of class