Question

Consider and give the output of the following program:

class report
{ int a,b;
 report()
 { a=10;
 b=15;
 }
 report(int x, int y)
 { a=x;
 b=y;
 }
 void print()
 { System.out.println(a*b);
 }
 static void main()
 { report r = new report();
 r.print();
 report p = new report(4, 5);
 p.print();
 }
}

Answer 1

150

20

Explanation:

When the object r of the Report class is created for the first time, the default constructor is invoked, and the variables a and b are initialized to 10 and 15, respectively. Therefore, the print() function outputs 150.
When the object p is created next, the parameterized constructor is called, initializing a and b with the values 4 and 5. Hence, the print() function produces 20.