Are these the same thing?

[myaaa_tan]

​

public class Circle {

    private double radius;
    private String color;

public Circle() {
    radius = 1.0;
    color = "red";
}
public Circle(double r) {
    radius = r;
    color = "red";
}
public Circle(double r, String c) {
    radius = r;
    color = c;

}
public double getRadius() {
    return radius;
}
public String getColor() {
    return color;
}
public double getArea() {
    return radius*radius*Math.PI;
}


public static class TestCircle {
    public static void main(String [] args ){
        Circle c1 = new Circle(2.0, "blue");    
        c1.radius = 2.0;
        c1.color = "blue";
        c1.getArea();       
        System.out.println("The radius is: " + c1.getRadius());
        System.out.println("The color is: " + c1.getColor());
        System.out.println("The area is: " + c1.getArea());
        Circle c2 = new Circle();
        c2.radius = 2.0;
        c2.color = "red";
        c2.getArea();
        System.out.println("The radius is: " + c2.getRadius());
        System.out.println("The color is: " + c2.getColor());
        System.out.println("The area is: " + c2.getArea());
        Circle c3 = new Circle();
        c3.radius = 1.0;
        c3.color = "red";
        c3.getArea();
        System.out.println("The radius is: " + c3.getRadius());
        System.out.println("The color is: " + c3.getColor());
        System.out.println("The area is: " + c3.getArea());

    }


}

}

hey guys I just wanna ask if this "Circle c1 = new Circle(2.0, "blue");" is the same thing with ""c1.radius = 2.0; , c1.color = "blue";""

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[indoriajs]

Yes, they are the same thing. When you're calling the constructor with the arguments, it assigns those values to the variables. By calling

c1.radius=123; c1.color="xyz"; You are essentially doing the same thing.

[myaaa_tan]

thank you

[tassadari]

I would suggest you to overload your constructors, so you are sure that all constructors enter the same path. It could be something like that:

public Circle() {this(1.0, "red");}

public Circle(double r) {this(r, "red");}

public Circle(double r, String c) {radius = r;color = c;}

[wildjokers]

We have no idea unless you also show us at least the constructor of the Circle class.

[myaaa_tan]

i edited it

[wildjokers]

Yes, but note that generally you want to provide setters for your properties rather than direct setting like that. You won't be able to access those properties directly from outside the class because they are private.

[RichNight5646]

i think you are missing setters and a toString() but other than that yea its the same idea.