Explanation of Solution
Creating “Main.java”:
- Create a class named “Main”.
- Define the “main ()” method.
- Declare required variables.
- Do till the user enters “n” using “while” condition.
- Get the string from the user.
- Check if the length of the string is greater than or equal to 20.
- Create an object “e” for the class. Here the exception is thrown using default constructor.
- Get and print the message using the method “e.getMessage()”.
- Else,
- Print the number of characters.
- Ask whether the user wants to continue or not and store the response in a variable “response”.
- Check if the response is equal to “n”.
- Break the loop.
- Define the “main ()” method.
Creating “MessageTooLongException.java”:
- Create a class named “MessageTooLongException” that extends “Exception”.
- Define a default constructor that calls the parent class’s method using “super ()” by passing a message.
- Define a parameterized constructor that calls the parent class’s method using “super ()” by passing a message that is given as the argument.
Program:
MessageTooLongException.java:
//Define a class
public class MessageTooLongException extends Exception
{
//Default constructor
public MessageTooLongException()
{
//Call the parent class by passing the message
super("Message Too Long!");
}
//Parameterized constructor
public MessageTooLongException(String message)
{
//Call the parent class by passing the message
super(message);
}
}
Main.java:
//import the package
import java.util.Scanner;
//Main class
class Main
{
//Define main method
public static void main(String[] args)
{
//Create an object for the scanner class
Scanner sc = new Scanner(System.in);
//Declare required variables
String str, response = "y";
//Do till the user enters 'n'
while(response...
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Java: An Introduction to Problem Solving and Programming (8th Edition)
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