Circle

import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
import java.lang.reflect.*;

public class Circle extends JFrame {
    public Circle(){
        super("Circle");
        setSize(360, 540);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        CirclePane pane = new CirclePane(90, 90, 100, "blue");
        add(pane);
        setVisible(true);
    }

    public static void main(String[] arguments){
        Circle cir = new Circle();
    }
}

class CirclePane extends JPanel {
    int radius, x, y;
    String color;
    Color actualColor;
    public CirclePane(int radius, int x, int y, String color){
        this.radius = radius;
        this.x = x;
        this.y = y;
        this.color = color;
    }
    public void paintComponent(Graphics comp){
        Graphics2D comp2D = (Graphics2D)comp;
        try {
            //actualColor = Color.decode(color);
            Field field = Class.forName("java.awt.Color").getField(color.toLowerCase()); // toLowerCase because the color fields are RED or red, not Red
            actualColor = (Color)field.get(null);
            comp2D.setColor(actualColor);
            Arc2D.Float circle = new Arc2D.Float(x, y, radius*2, radius*2, 0, 360, Arc2D.OPEN);
            comp2D.fill(circle);
        } catch (NumberFormatException|IllegalAccessException|ClassNotFoundException|NoSuchFieldException err){
            System.out.println("Error: " + err.getMessage());
        }

    }
}