public class SumOfDiagonals{ public static void main(String[] args) { String[][] s1 = {{"2", "3", "4"}, {"5", "6", "7"}, {"8", "9", "10"}}; String[][] s2 = {{"1", "2", "3"}, {"5", "6", "7"}, {"9", "10", "11"}, {"13", "14", "15"}}; String[][] s3 = {{"1", "2", "3", "4"}, {"5", "6", "7", "8"}, {"9", "10", "11", "12"}, {"13", "14", "15", "16"}}; try { sumOfDiagonals(s1); sumOfDiagonals(s2); sumOfDiagonals(s3); } catch(NumberFormatException ex) { System.out.println("Not a valid integer"); } catch(IllegalArgumentException ex) { System.out.println("Array not a square"); } } public static void sumOfDiagonals(String[][] x) { //TODO Complete this method as required in the homework instructions }} Complete the sumOfDiagonals method in SumOfDiagonals.java to do thefollowing:The method takes a 2D String array x as a parameter and returns no value.The method should calculate and print the sum of the elements on the majordiagonal of the array x.-In order to have a major diagonal, the array passed into the method shouldbe a square (n-by-n), if it's not a square your program should handle thatsituation by throwing an exception. (Do Not worry about ragged arrays)If the array is a square, but there is a non-integer value on the majordiagonal, your program should handle that situation by throwing anexception.When handling the exceptions, be as specific as you can be, (i.e. Do Not justuse the Exception class to handle all exceptions in one catch block).Make the proper calls to the sumOfDiagonals method from the mainmethod to test your sumOfDiagonals method on all the String arraysprovided in the main method.Sample runs provided on the next page. Argument Array x{{"2", "3", "4"},{"5", "6", "7"},{"8", "9" "10"}}ر{{"1", "2", "3"},{"5", "6", "7"},{"9", "10", "11"},{"13", "14", "15"}};{{"1", "2", "3", "4"},{"5", "6", "7", "8"},{"9", "10", "11", "12"},{"13", "14", "15", "pp"}};{{"1", "2", "3", "4"},{"5", "6", "7", "8"},{"9", "10", "11", "12"},{"13", "14", "15", "16"}};Output18Array not a squareNot a valid integer34

Answered: public class SumOfDiagonals { public…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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public class SumOfDiagonals { public static void main(String[] args) { String[][] s1 = {{"2", "3", "4"}, {"5", "6", "7"}, {"8", "9", "10"}}; String[][] s2 = {{"1", "2", "3"}, {"5", "6", "7"}, {"9", "10", "11"}, {"13", "14", "15"}}; String[][] s3 = {{"1", "2", "3", "4"}, {"5", "6", "7", "8"}, {"9", "10", "11", "12"}, {"13", "14", "15", "16"}}; try { sumOfDiagonals(s1); sumOfDiagonals(s2); sumOfDiagonals(s3); } catch(NumberFormatException ex) { System.out.println("Not a valid integer"); } catch(IllegalArgumentException ex) { System.out.println("Array not a square"); } } public static void sumOfDiagonals(String[][] x) { //TODO Complete this method as required in the homework instructions } }

Complete the sumOfDiagonals method in SumOfDiagonals.java to do the
following:
The method takes a 2D String array x as a parameter and returns no value.
The method should calculate and print the sum of the elements on the major
diagonal of the array x.
-
In order to have a major diagonal, the array passed into the method should
be a square (n-by-n), if it's not a square your program should handle that
situation by throwing an exception. (Do Not worry about ragged arrays)
If the array is a square, but there is a non-integer value on the major
diagonal, your program should handle that situation by throwing an
exception.
When handling the exceptions, be as specific as you can be, (i.e. Do Not just
use the Exception class to handle all exceptions in one catch block).
Make the proper calls to the sumOfDiagonals method from the main
method to test your sumOfDiagonals method on all the String arrays
provided in the main method.
Sample runs provided on the next page.

Argument Array x
{{"2", "3", "4"},
{"5", "6", "7"},
{"8", "9" "10"}}
ر
{{"1", "2", "3"},
{"5", "6", "7"},
{"9", "10", "11"},
{"13", "14", "15"}};
{{"1", "2", "3", "4"},
{"5", "6", "7", "8"},
{"9", "10", "11", "12"},
{"13", "14", "15", "pp"}};
{{"1", "2", "3", "4"},
{"5", "6", "7", "8"},
{"9", "10", "11", "12"},
{"13", "14", "15", "16"}};
Output
18
Array not a square
Not a valid integer
34

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