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

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: