Consider the following class definition. public class rectangle{private double length; private double width; public rectangle(){length = 0; width = 0; }public rectangle(double l, double w){length = l; width = w; }public void set(double l, double w){length = l; width = w; }public void print(){system. out. println(length + " " + width); }public double area(){return length * width; }public void perimeter(){return 2 length + 2 width; }}suppose that you have the following declaration. rectangle bigrect = new rectangle();
which of the following sets of statements are valid in java?
(i) bigrect. set(10, 5);
(ii) bigrect. length = 10; bigrect. width = 5;

The answer is "Option (i)".

Explanation:

In the given java code a class is defined that name is "Rectangle" inside a class two global private double datatype variable is defined that is "length and width". A default constructor is defined that contains the value of private variables. In the next line, a parameterized constructor and a set function is defined that contain the parameter values. Then three function is defined that is "print, area, and perimeter" in which print function prints value and area, perimeter function calculate values.

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