StaticInitializerBlock.java

//Static initialization blocks are executed when the class is loaded, and you can initialize static variables in those blocks.

//It's time to test your knowledge of Static initialization blocks. You can read about it here: https://docs.oracle.com/javase/tutorial/java/javaOO/initial.html

//You are given a class Solution with a main method. Complete the given code so that it outputs the area of a parallelogram with breadth B and height H. 
//You should read the variables from the standard input.

// If B<=0 or H<=0 , the output should be "java.lang.Exception: Breadth and height must be positive" without quotes.

// Input Format
// There are two lines of input. The first line contains B: the breadth of the parallelogram. The next line contains H: the height of the parallelogram.

// Constraints
//-100<=B<=100
//-100<=H<=100

// Output Format
// If both values are greater than zero, then the main method must output the area of the parallelogram. Otherwise, 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



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

public class Solution {
static int B;
static int H;
static boolean flag = true;
static {
    Scanner num = new Scanner(System.in);  
     B = num.nextInt();
     H = num.nextInt();
    if (B <= 0 || H <= 0){
    flag = false;
    System.out.print("java.lang.Exception: Breadth and height must be positive");
    }
    
}
public static void main(String[] args){
		if(flag){
			int area=B*H;
			System.out.print(area);
		}
		
	}//end of main

}//end of class