When the constructor taking parameters is known as n-arg or parameterized constructor.

Here in this context, instance variables equals local variables. Let’s see an example;

ConstructorExample2.java

class A
{
  int x,y;
  A(int p,int q)    //parametrized constructor
  {
		x=p;
		y=q;
  }
  void show()
  {
		System.out.println("x="+x);
		System.out.println("y="+y);
  }
}
class ConstructorExample2
{
  public static void main(String[] args)
  {
		A obj=new A(300,400);
		obj.show();
  }
}

Output:

Here in this example x, y are instance variables and p, q are local variables. According to the concept x=p and y=q. We know that when an object is created, the constructor execute automatically. Here at the time of declaration of object obj we have passed value 300 and 400. So 300 will assign to p and 400 will assign to q then the p value will assign to x and q value will assign to y. Then finally x=300 and y=400 as output.