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public class Product { private String name; private double cost; public Product(String n, double c) { name=n; cost=c; } public String getName() { return name; } public double getCost() { return cost; } public String toString() { return (name + "$" + cost); } What is the output of the code on the right? } 3 Cereal $7.49 ArrayList cart1 = new ArrayList(); ArrayList cart2 = cart1; cart1.add(new Product("Shampoo",13.89)); cart1.add(new Product("Bread",4.99)); cart1.add(new Product("Cereal",7.49)); System.out.println(cart2.size()); cart2.remove(1); System.out.println(cart1.get(1));

public class Product { private String name; private double cost; public Product(String n, double c) { name=n; cost=c; } public String getName() { return name; } public double getCost() { return cost; } public String toString() { return (name + "$" + cost); } What is the output of the code on the right? } 3 Cereal $7.49 ArrayList cart1 = new ArrayList(); ArrayList cart2 = cart1; cart1.add(new Product("Shampoo",13.89)); cart1.add(new Product("Bread",4.99)); cart1.add(new Product("Cereal",7.49)); System.out.println(cart2.size()); cart2.remove(1); System.out.println(cart1.get(1));

EBK JAVA PROGRAMMING
EBK JAVA PROGRAMMING
9th Edition
ISBN:9781337671385
Author:FARRELL
Publisher:FARRELL
Chapter10: Introduction To Inheritance
Section: Chapter Questions
Problem 14RQ
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can you give me a background explanation i can use to approach this problem?

### Code Analysis and Output Explanation The image shows a Java code snippet divided into two main parts: a class definition and a test of that class with an `ArrayList`. Below is a transcription of the code and its explanation. #### Java Class Definition ```java public class Product { private String name; private double cost; public Product(String n, double c) { name = n; cost = c; } public String getName() { return name; } public double getCost() { return cost; } public String toString() { return (name + " $" + cost); } } ``` **Explanation**: - The `Product` class has two private fields, `name` (a `String`) and `cost` (a `double`). - It has a constructor that initializes these fields. - Methods `getName()` and `getCost()` return the product's name and cost respectively. - The `toString()` method returns a formatted string containing the product's name and cost. #### ArrayList Operations ```java ArrayList<Product> cart1 = new ArrayList<Product>(); ArrayList<Product> cart2 = cart1; cart1.add(new Product("Shampoo", 13.89)); cart1.add(new Product("Bread", 4.99)); cart1.add(new Product("Cereal", 7.49)); System.out.println(cart2.size()); cart2.remove(1); System.out.println(cart1.get(1)); ``` **Explanation**: - `cart1` and `cart2` are created as `ArrayList` references to hold `Product` objects. `cart2` is directly set to reference `cart1`. - Three `Product` objects ("Shampoo", "Bread", "Cereal") with specified costs are added to `cart1`. - Since `cart2` is referencing `cart1`, `System.out.println(cart2.size());` outputs the number `3`, indicating three products in the list. - The `remove(1)` method call on `cart2` removes the second item ("Bread") from the list (because indexing starts at 0). - `System.out.println(cart1.get(1));` prints the second product, which is now "Cereal $7.49", due to the removal of "Bread". ### Final Output - The size of the list before removal: **
Transcribed Image Text:### Code Analysis and Output Explanation The image shows a Java code snippet divided into two main parts: a class definition and a test of that class with an `ArrayList`. Below is a transcription of the code and its explanation. #### Java Class Definition ```java public class Product { private String name; private double cost; public Product(String n, double c) { name = n; cost = c; } public String getName() { return name; } public double getCost() { return cost; } public String toString() { return (name + " $" + cost); } } ``` **Explanation**: - The `Product` class has two private fields, `name` (a `String`) and `cost` (a `double`). - It has a constructor that initializes these fields. - Methods `getName()` and `getCost()` return the product's name and cost respectively. - The `toString()` method returns a formatted string containing the product's name and cost. #### ArrayList Operations ```java ArrayList<Product> cart1 = new ArrayList<Product>(); ArrayList<Product> cart2 = cart1; cart1.add(new Product("Shampoo", 13.89)); cart1.add(new Product("Bread", 4.99)); cart1.add(new Product("Cereal", 7.49)); System.out.println(cart2.size()); cart2.remove(1); System.out.println(cart1.get(1)); ``` **Explanation**: - `cart1` and `cart2` are created as `ArrayList` references to hold `Product` objects. `cart2` is directly set to reference `cart1`. - Three `Product` objects ("Shampoo", "Bread", "Cereal") with specified costs are added to `cart1`. - Since `cart2` is referencing `cart1`, `System.out.println(cart2.size());` outputs the number `3`, indicating three products in the list. - The `remove(1)` method call on `cart2` removes the second item ("Bread") from the list (because indexing starts at 0). - `System.out.println(cart1.get(1));` prints the second product, which is now "Cereal $7.49", due to the removal of "Bread". ### Final Output - The size of the list before removal: **
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