Object-oriented programming · interview question
In an e-commerce application, which statement correctly initializes a field using 'this'? public class Order { private int quantity; public Order(int quantity) { // Line X } }?
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public class Order {
private int quantity;
public Order(int quantity) {
this.quantity = quantity;
}
}Answer and explanation
Correct answer
A. This.quantity = quantity;
Why
The correct statement is 'this.quantity = quantity;'. It assigns the parameter 'quantity' to the field 'quantity' of the object, differentiating between the two.
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