constructor_overloading.java

package NPTEL1;
//class Circle
class Circle4{
	double x,y;
	double r;
	//method to find circumference
	double circumference(){
		return 2*3.14159*r;
	}
	//method to find area
	double area() {
		return (22/7)*r*r;
	}
	//constructor with all arguments
	Circle4(double a,double b,double c){
		x=a;
		y=b;
		r=c;
	}
	//constructor with one argument keeping other two constant
	Circle4(double z){
		x=0;
		y=0;
		r=z;
	}
	//constructor with object as a argument
	Circle4(Circle4 c){
		x=c.x;y=c.y;r=c.r;
	}
	//constructor with no arguments and keeping all variable constant
	Circle4(){
		x=0;y=0;r=1;
	}
}
//main class 
public class constructor_overloading {
	public static void main(String []args) {
		//objects  with different constructors 
		Circle4 c1=new Circle4(4.0,5.0,6.0);
		Circle4 c2=new Circle4(9.0);
		Circle4 c3=new Circle4(c1);
		Circle4 c4=new Circle4();
		System.out.println("Circumference="+c1.circumference());
		System.out.println("Area="+c1.area());
		System.out.println("Circumference="+c2.circumference());
		System.out.println("Area="+c2.area());
		System.out.println("Circumference="+c3.circumference());
		System.out.println("Area="+c3.area());
		System.out.println("Circumference="+c4.circumference());
		System.out.println("Area="+c4.area());
		
		
	}
}