☞This constructor is used to copy the initial values of the instance variables of an object to the instance variables of another object.
class Area{
int length;
int breadth;
Area(int l, int b){
length=l;
breadth=b;
}
Area(Area obj){
length=obj.length;
breadth=obj.breadth;
}
void display(){
System.out.println(length*breadth);
}
public static void main(String args[]){
Area rectangle1 = new Area(4,5);
Area rectangle2 = new Area(rectangle1);
rectangle1.display();
rectangle2.display();
}
}
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