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  1. import java.awt.BorderLayout;
  2. import java.awt.Color;
  3. import java.awt.Dimension;
  4. import java.awt.Graphics;
  5. import java.awt.Graphics2D;
  6. import java.awt.Rectangle;
  7.  
  8. import javax.swing.JFrame;
  9. import javax.swing.JPanel;
  10. import javax.swing.SwingUtilities;
  11.  
  12. @SuppressWarnings("serial")
  13. public class Gui extends JFrame {
  14.  
  15.     public Gui() {
  16. 		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  17. 		Scene scene = new Scene(300, 300, new Quad(50, 50, 100, 100, Color.ORANGE));
  18. 		getContentPane().add(scene, BorderLayout.CENTER);
  19. 		pack();
  20. 		setLocationRelativeTo(null);
  21. 	}
  22.  
  23. 	public class Quad extends Rectangle {
  24. 		private Color color;
  25.  
  26. 		public Quad(int x, int y, int width, int height, Color color) {
  27. 			super(x, y, width, height);
  28. 			this.color = color;
  29. 		}
  30.  
  31. 		public Color getColor() {
  32. 			return color;
  33. 		}
  34.  
  35. 	}
  36.  
  37. 	public class Scene extends JPanel {
  38. 		private Quad quad;
  39.  
  40. 		public Scene(int width, int height, Quad quad) {
  41. 			super(new BorderLayout());
  42. 			setPreferredSize(new Dimension(width, height));
  43. 			this.quad = quad;
  44. 		}
  45.  
  46. 		@Override
  47. 		protected void paintComponent(Graphics g) {
  48. 			Graphics2D g2 = (Graphics2D)g;
  49. 			g2.setPaint(quad.getColor());
  50. 			g2.fill(quad);
  51. 		}
  52. 	}
  53.  
  54. 	public static void main(String[] args) {
  55. 		SwingUtilities.invokeLater(new Runnable() {
  56.  
  57. 			@Override
  58. 			public void run() {
  59. 				new Gui().setVisible(true);
  60. 			}
  61. 		});
  62. 	}
  63. }
  64.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
Main.java:13: error: class Gui is public, should be declared in a file named Gui.java
public class Gui extends JFrame {
       ^
1 error
stdout 
Standard output is empty
https://ideone.com/u5Ce9i
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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