package?java01; import?java.awt.*; import?java.awt.geom.*; import?javax.swing.*; public?class?java4{ private?static?final?int?Width?=?0; public?void?paintComponent(Graphics?g){ paintComponent(g); Graphics2D?g2?=?(Graphics2D)?g; float?width?=?getSize().width-10; float?Height=?getSize().height/3-10; g2.setPaint(Color.red); g2.draw(new?Line2D.Float(5,5,5+Width,5+Height)); g2.draw(new?Line2D.Float(5,5+Height,5+Width,5)); g2.setPaint(new?Color(192,128,64)); g2.fill(new?Rectangle2D.Float(5,10+Height,Width,Height)); g2.fill(new?Shape(5,5,Color.blue,5+Width,5,Color.yellow)); g2.fill(new?Ellipse2D.Float(5,20+2*Height,Width,Height)); } private?Object?getSize()?{ //?TODO?Auto-generated?method?stub return?null; } public?static?void?main(String?[]?argv,?Object?color){ JFrame?f=new?JFrame("色彩應用"); Component?p=new?Color(0); p.setBackground(color.white); f.getContentPane().add(p); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setSize(640,480); f.setVisible(true); } }顯示有錯誤，不知如何修改，朋友們看下，不勝感激！