Object-oriented programming · interview question
What is the purpose of using 'this' in the following constructor? public class Product { private double price; public Product(double price) { this.price = price; } }?
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public class Product {
private double price;
public Product(double price) {
this.price = price;
}
}Answer and explanation
Correct answer
B. To assign the parameter to the instance field
Why
In this constructor, 'this.price' refers to the instance field, allowing the method to differentiate it from the parameter 'price'. Without 'this', the parameter would overshadow the instance field.
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