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The while loop makes up to two attempts to read a positive integer from input into coneWidth. Use multiple exception handlers t • Catch an InputMismatchException, output "Unexpected input: The ConeWidth program quits", and assign triesLeft with 0. • Catch an Exception, output the message of the Exception, and subtract 1 from tries Left. End each output with a newline. Ex: If the input is 23, then the output is: Tries left: 2 Valid input: Cone's width (in cm) is 23 Ex: If the input is R, then the output is: Tries left: 2 Unexpected input: The ConeWidth program quits Ex: If the input is -28 23, then the output is: Tries left: 2 Cone's width (in cm) must be positive Tries left: 1 Valid input: Cone's width (in cm) is 23 1 import java.util.Scanner; 2 import java.util. InputMismatchException; 3 4 public class ConeWidth { 5 public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int coneWidth; int tries Left = 2; 6 7 8 9 10 11 12 13 14 15 16 PE 17 while (triesLeft > 0) { System.out.println("Tries left: + triesLeft); try { coneWidth scnr.nextInt (); if (coneWidth <= 0) { throw new Exception("Cone's width (in cm) must be positive");

The while loop makes up to two attempts to read a positive integer from input into coneWidth. Use multiple exception handlers t • Catch an InputMismatchException, output "Unexpected input: The ConeWidth program quits", and assign triesLeft with 0. • Catch an Exception, output the message of the Exception, and subtract 1 from tries Left. End each output with a newline. Ex: If the input is 23, then the output is: Tries left: 2 Valid input: Cone's width (in cm) is 23 Ex: If the input is R, then the output is: Tries left: 2 Unexpected input: The ConeWidth program quits Ex: If the input is -28 23, then the output is: Tries left: 2 Cone's width (in cm) must be positive Tries left: 1 Valid input: Cone's width (in cm) is 23 1 import java.util.Scanner; 2 import java.util. InputMismatchException; 3 4 public class ConeWidth { 5 public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int coneWidth; int tries Left = 2; 6 7 8 9 10 11 12 13 14 15 16 PE 17 while (triesLeft > 0) { System.out.println("Tries left: + triesLeft); try { coneWidth scnr.nextInt (); if (coneWidth <= 0) { throw new Exception("Cone's width (in cm) must be positive");

Database System Concepts
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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New JAVA Code can only be added between lines 24 and 26. All other lines can not be edited in any way. (As seen in Image). 

```java try { coneWidth = scnr.nextInt(); if (coneWidth <= 0) { throw new Exception("Cone's width (in cm) must be positive"); } triesLeft = 0; System.out.print("Valid input: "); System.out.println("Cone's width (in cm) is " + coneWidth); } /* Your code goes here */ } } ``` ### Explanation This Java code snippet demonstrates basic error checking for user input. It reads an integer value for `coneWidth` and ensures that it is positive. If the input is not positive, the program throws an exception with a message indicating that the cone's width must be positive. Upon receiving valid input, it prints a message confirming the cone's width. - **Line 13-29**: The code is encapsulated in a try block to handle exceptions. - **Line 14**: It reads an integer input from the user and assigns it to `coneWidth`. - **Line 16-18**: It checks if `coneWidth` is less than or equal to zero, and if so, throws an exception with a descriptive message. - **Line 20-22**: Once valid input is confirmed, it prints a validation message and the cone's width. - **Line 25**: A comment indicates where additional code can be implemented. This code is ideal for educational purposes, illustrating how to manage input validation and exception handling in Java.
Transcribed Image Text:```java try { coneWidth = scnr.nextInt(); if (coneWidth <= 0) { throw new Exception("Cone's width (in cm) must be positive"); } triesLeft = 0; System.out.print("Valid input: "); System.out.println("Cone's width (in cm) is " + coneWidth); } /* Your code goes here */ } } ``` ### Explanation This Java code snippet demonstrates basic error checking for user input. It reads an integer value for `coneWidth` and ensures that it is positive. If the input is not positive, the program throws an exception with a message indicating that the cone's width must be positive. Upon receiving valid input, it prints a message confirming the cone's width. - **Line 13-29**: The code is encapsulated in a try block to handle exceptions. - **Line 14**: It reads an integer input from the user and assigns it to `coneWidth`. - **Line 16-18**: It checks if `coneWidth` is less than or equal to zero, and if so, throws an exception with a descriptive message. - **Line 20-22**: Once valid input is confirmed, it prints a validation message and the cone's width. - **Line 25**: A comment indicates where additional code can be implemented. This code is ideal for educational purposes, illustrating how to manage input validation and exception handling in Java.
The while loop makes up to two attempts to read a positive integer from input into `coneWidth`. Use multiple exception handlers to: - Catch an `InputMismatchException`, output "Unexpected input: The ConeWidth program quits", and assign `triesLeft` with 0. - Catch an `Exception`, output the message of the Exception, and subtract 1 from `triesLeft`. End each output with a newline. **Example Outputs:** 1. **If the input is 23, then the output is:** ``` Tries left: 2 Valid input: Cone's width (in cm) is 23 ``` 2. **If the input is R, then the output is:** ``` Tries left: 2 Unexpected input: The ConeWidth program quits ``` 3. **If the input is -28 23, then the output is:** ``` Tries left: 2 Cone's width (in cm) must be positive Tries left: 1 Valid input: Cone's width (in cm) is 23 ``` ```java 1 import java.util.Scanner; 2 import java.util.InputMismatchException; 3 4 public class ConeWidth { 5 public static void main(String[] args) { 6 Scanner scnr = new Scanner(System.in); 7 int coneWidth; 8 int triesLeft = 2; 9 10 while (triesLeft > 0) { 11 System.out.println("Tries left: " + triesLeft); 12 13 try { 14 coneWidth = scnr.nextInt(); 15 16 if (coneWidth <= 0) { 17 throw new Exception("Cone's width (in cm) must be positive"); 18 } ```
Transcribed Image Text:The while loop makes up to two attempts to read a positive integer from input into `coneWidth`. Use multiple exception handlers to: - Catch an `InputMismatchException`, output "Unexpected input: The ConeWidth program quits", and assign `triesLeft` with 0. - Catch an `Exception`, output the message of the Exception, and subtract 1 from `triesLeft`. End each output with a newline. **Example Outputs:** 1. **If the input is 23, then the output is:** ``` Tries left: 2 Valid input: Cone's width (in cm) is 23 ``` 2. **If the input is R, then the output is:** ``` Tries left: 2 Unexpected input: The ConeWidth program quits ``` 3. **If the input is -28 23, then the output is:** ``` Tries left: 2 Cone's width (in cm) must be positive Tries left: 1 Valid input: Cone's width (in cm) is 23 ``` ```java 1 import java.util.Scanner; 2 import java.util.InputMismatchException; 3 4 public class ConeWidth { 5 public static void main(String[] args) { 6 Scanner scnr = new Scanner(System.in); 7 int coneWidth; 8 int triesLeft = 2; 9 10 while (triesLeft > 0) { 11 System.out.println("Tries left: " + triesLeft); 12 13 try { 14 coneWidth = scnr.nextInt(); 15 16 if (coneWidth <= 0) { 17 throw new Exception("Cone's width (in cm) must be positive"); 18 } ```
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