Question

Suppose you have a BananaVendor class with the following instance variables, each of which must be considered when considering equality:

private int bananaCount;
private List varieties;
private Banana banana;
Write a valid equals method for the BananaVendor class.

Answer 1

When implementing the equals method for the BananaVendor class, you need to consider all the instance variables. One way to implement it is by comparing each individual instance variable using the equals method or appropriate comparison methods for specific data types.

Step-by-step explanation:

The equals method is used to compare two objects for equality in Java. When implementing the equals method for the BananaVendor class, you need to consider all the instance variables that affect the equality. In this case, the instance variables are private int bananaCount, private List varieties, and private Banana banana.

One way to implement the equals method is by comparing each individual instance variable. You can start by checking if the object being compared is an instance of BananaVendor. Then, compare each instance variable one by one using the equals method or appropriate comparison methods for the specific data types used.

Here is an example implementation of the equals method for the BananaVendor class:

public boolean equals(Object obj) {
 if (this == obj) {
return true;
 }
 if (obj == null || getClass() != obj.getClass()) {
return false;
 }
 BananaVendor other = (BananaVendor) obj;
 return bananaCount == other.bananaCount &&
Objects.equals(varieties, other.varieties) &&
Objects.equals(banana, other.banana);
}