Chapter 02 section 04 updated.

Author: liuyubobobo

02-Java-Swing-Basics/04-Using-Graphics2D/src/AlgoFrame.java

@@ -39,19 +39,17 @@ private class AlgoCanvas extends JPanel{
         public void paintComponent(Graphics g) {
             super.paintComponent(g);
 
-            //g.drawOval(50, 50, 300, 300);
-
             Graphics2D g2d = (Graphics2D)g;
 
-            int strokeWidth = 10;
+            int strokeWidth = 5;
             g2d.setStroke(new BasicStroke(strokeWidth, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
 
             g2d.setColor(Color.RED);
-            Ellipse2D circle = new Ellipse2D.Double(50, 50, 600, 600);
+            Ellipse2D circle = new Ellipse2D.Double(50, 50, 300, 300);
             g2d.draw(circle);
 
             g2d.setColor(Color.BLUE);
-            Ellipse2D circle2 = new Ellipse2D.Double(50, 50, 600, 600);
+            Ellipse2D circle2 = new Ellipse2D.Double(50, 50, 300, 300);
             g2d.fill(circle2);
         }
 

02-Java-Swing-Basics/04-Using-Graphics2D/src/Main.java

@@ -6,7 +6,7 @@ public class Main {
     public static void main(String[] args) {
 
         EventQueue.invokeLater(() -> {
-            AlgoFrame frame = new AlgoFrame("Welcome",800,800);
+            AlgoFrame frame = new AlgoFrame("Welcome",500,500);
         });
     }
 }