Skip to main content

Java Static Initializer Block

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.
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  and height . You should read the variables from the standard input.
If  or  , 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 : the breadth of the parallelogram. The next line contains : the height of the parallelogram.
Constraints
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 {

    //Write your code here
    static int B;
    static int H;
    static boolean flag = true;
    static {
        Scanner sc = new Scanner(System.in);
        B = sc.nextInt();
        H = sc.nextInt();
        if(B<=0 || H<=0){
            System.out.println("java.lang.Exception: Breadth and height must be positive");
            flag = false;
            //return;
        }else{
            //System.out.println(H);
        }
    }

    public static void main(String[] args){
            if(flag){
                int area=B*H;
                System.out.print(area);
            }
            
        }//end of main

    }//end of class
    
}//end of class

Comments

  1. This comment has been removed by the author.

    ReplyDelete
  2. why we have to initialize everything as static?
    why we cant get same output without it

    ReplyDelete
    Replies
    1. Because static variables are used independently

      Delete
  3. Solution.java:40: error: reached end of file while parsing
    }//end of class
    ^
    1 error..................showing this type of error please help

    ReplyDelete
    Replies
    1. take off the last one brace at the end line of code

      Delete
    2. public class Solution { is already present in the code, see that if you havent pasted it twice.

      Delete
  4. it is shown compiler error so what i do

    ReplyDelete
  5. 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 sc= new Scanner(System.in);
    B=sc.nextInt();
    H=sc.nextInt();

    if(B<=0 || H<=0)
    {
    System.out.println("java.lang.Exception: Breadth and height must be positive");
    flag=false;
    }





    }

    public static void main(String[] args){
    if(flag){
    int area=B*H;
    System.out.print(area);
    }

    }//end of main

    }//end of class



    -> USE THIS CODE!! IT MIGHT HELP

    ReplyDelete
  6. nice information thanks for shring............................!
    spring boot certification course training

    ReplyDelete

Post a Comment

Popular posts from this blog

Java Loops II print each element of our series as a single line of space-separated values.

We use the integers  ,  , and   to create the following series: You are given   queries in the form of  ,  , and  . For each query, print the series corresponding to the given  ,  , and   values as a single line of   space-separated integers. Input Format The first line contains an integer,  , denoting the number of queries.  Each line   of the   subsequent lines contains three space-separated integers describing the respective  ,  , and   values for that query. Constraints Output Format For each query, print the corresponding series on a new line. Each series must be printed in order as a single line of   space-separated integers. Sample Input 2 0 2 10 5 3 5 Sample Output 2 6 14 30 62 126 254 510 1022 2046 8 14 26 50 98 Explanation We have two queries: We use  ,  , and   to produce some series  : ... and so on. Once we hit  , we print the first ten terms as a single line of space-separate

Java Currency Formatter Solution

Given a  double-precision  number,  , denoting an amount of money, use the  NumberFormat  class'  getCurrencyInstance  method to convert   into the US, Indian, Chinese, and French currency formats. Then print the formatted values as follows: US: formattedPayment India: formattedPayment China: formattedPayment France: formattedPayment where   is   formatted according to the appropriate  Locale 's currency. Note:  India does not have a built-in Locale, so you must  construct one  where the language is  en  (i.e., English). Input Format A single double-precision number denoting  . Constraints Output Format On the first line, print  US: u  where   is   formatted for US currency.  On the second line, print  India: i  where   is   formatted for Indian currency.  On the third line, print  China: c  where   is   formatted for Chinese currency.  On the fourth line, print  France: f , where   is   formatted for French currency. Sample