Which of the following constructor declarations is correct for overloading?

easy📝 Syntax Q12 of 15

Java - Constructors

Which of the following constructor declarations is correct for overloading?

public class Car {
    public Car() { }
    public Car(String model) { }
    public Car(int year) { }
    public Car(String model, int year) { }
}

AOnly constructors with one parameter are allowed.

BConstructors must have different names, so this is incorrect.

CAll constructors have different parameter lists, so all are correct.

DConstructors cannot have parameters, so only the first is correct.

Step-by-Step Solution

Solution:

Step 1: Check parameter lists of constructors
Each constructor has a unique parameter list: no parameters, one String, one int, and two parameters.
Step 2: Verify constructor overloading rules
Constructors can share the same name but must differ in parameters. This code follows that rule.
Final Answer:
All constructors have different parameter lists, so all are correct. -> Option C
Quick Check:
Different parameters = valid overloading [OK]

Quick Trick: Check if parameter lists differ, not constructor names [OK]

Common Mistakes:

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