Problem 1: 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.

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
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**Problem 1:**

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.
Transcribed Image Text:**Problem 1:** 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 and Output Overview**

The table below details various Argument Arrays and their respective Outputs:

1. **Argument Array x:**
   ```
   {
     {"2", "3", "4"},
     {"5", "6", "7"},
     {"8", "9", "10"}
   }
   ```
   **Output:**
   - The output is `18`.

2. **Argument Array x:**
   ```
   {
     {"1", "2", "3"},
     {"5", "6", "7"},
     {"9", "10", "11"},
     {"13", "14", "15"}
   }
   ```
   **Output:**
   - The output is `Array not a square` indicating the array is not of equal dimensions in rows and columns.

3. **Argument Array x:**
   ```
   {
     {"1", "2", "3", "4"},
     {"5", "6", "7", "8"},
     {"9", "10", "11", "12"},
     {"13", "14", "15", "pp"}
   }
   ```
   **Output:**
   - The output is `Not a valid integer` highlighting a non-numeric value in the array.

4. **Argument Array x:**
   ```
   {
     {"1", "2", "3", "4"},
     {"5", "6", "7", "8"},
     {"9", "10", "11", "12"},
     {"13", "14", "15", "16"}
   }
   ```
   **Output:**
   - The output is `34`. 

This table demonstrates various cases of input arrays and the corresponding error handling or calculated result in different scenarios.
Transcribed Image Text:**Argument Array x and Output Overview** The table below details various Argument Arrays and their respective Outputs: 1. **Argument Array x:** ``` { {"2", "3", "4"}, {"5", "6", "7"}, {"8", "9", "10"} } ``` **Output:** - The output is `18`. 2. **Argument Array x:** ``` { {"1", "2", "3"}, {"5", "6", "7"}, {"9", "10", "11"}, {"13", "14", "15"} } ``` **Output:** - The output is `Array not a square` indicating the array is not of equal dimensions in rows and columns. 3. **Argument Array x:** ``` { {"1", "2", "3", "4"}, {"5", "6", "7", "8"}, {"9", "10", "11", "12"}, {"13", "14", "15", "pp"} } ``` **Output:** - The output is `Not a valid integer` highlighting a non-numeric value in the array. 4. **Argument Array x:** ``` { {"1", "2", "3", "4"}, {"5", "6", "7", "8"}, {"9", "10", "11", "12"}, {"13", "14", "15", "16"} } ``` **Output:** - The output is `34`. This table demonstrates various cases of input arrays and the corresponding error handling or calculated result in different scenarios.
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