2. Create a ProductException class whose constructor receives a String that cons
ID: 3557317 • Letter: 2
Question
2. Create a ProductException class whose constructor receives a String that consists of a product number and price. Save the file as ProductException.java. Create a Product class with two fields, productNum and price. The Product constructor requires values for both fields. Upon construction, throw a ProductException if the product number does not consist of three digits, if the price is less than $0.01, or if the price is over $1,000. Save the class as Product.java. Write an application that establishes at least four Product objects with valid and invalid values. Display an appropriate message when a Product object is created successfully and when one is not. Save the file as ThrowProductException.java. thanks. Points here only, need ASAP!!!
Explanation / Answer
// Create a ProductException class whose constructor receives a String that consists of a product number and price.
// Save the file as ProductException.java.
class ProductException extends Exception
{
public ProductException(String str)
{
System.out.println("Invalid Product Object");
}
}
//Create a Product class with two fields, productNum and price.
//The Product constructor requires values for both fields.
//Upon construction, throw a ProductException if the product number does not consist of three digits,
//if the price is less than $0.01, or if the price is over $1,000.
//Save the class as Product.java.
class Product
{
private int productNum;
private double price;
public Product(int num, double p) throws ProductException
{
String str = Integer.toString(num);
if(str.length()!=3) throw new ProductException(str+Double.toString(p));
productNum = num;
if(p<0.01 || p > 1000)
throw new ProductException(str+Double.toString(p));
price = p;
System.out.println("Product Object Created Successfully");
}
}
// Write an application that establishes at least four Product objects with valid and invalid values.
// Display an appropriate message when a Product object is created successfully and when one is not.
// Save the file as ThrowProductException.java.
public class ThrowProductException
{
public static void main(String[] args) throws ProductException
{
try
{
Product P1 = new Product(123,10);
}
catch(ProductException PE)
{
}
try { Product P2 = new Product(23,10);}
catch(ProductException PE) { }
try { Product P3 = new Product(123,10000);}
catch(ProductException PE) { }
try { Product P4 = new Product(456,10);}
catch(ProductException PE) { }
}
}
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