Question

public class Illustrate{private int x;private int y;public Illustrate(){x = 1;y = 2;}public Illustrate(int a){x = a;}public void print(){System.out.println("x = " + x + ", y = " + y);}public void incrementY(){y++;}}What does the default constructor do in the class definition above?1. Sets the value of x to 02. There is no default constructor.3. Sets the value of x to 14. Sets the value of x to a

Answer 1

The answer is "Option 3".

Explanation:

In the given java code a class "Illustrate" is defined inside the class two private integer variable is defined that is "x and y". Then a default constructor is defined which use these variable for assign values. Then we create the parameterized constructor in this constructor we an integer parameter and use variable x for the assign parameter value.

In the class two function is defined that is "print and incrementY". The prints function print private variables value and incrementY function is increment the y variable value by 1. and other options are not correct that can be described as follows:

• In option 1, In x variable, we assign the value that is 0.
• In option 2, It is not correct, because there is a default constructor.
• In option 4, It is not correct, because this value is set in the parameterized constructor.