Draw arrow line example
Draw arrow line example - Its a complete example import java.awt.*; import java.awt.geom.*; import javax.swing.*; public class Test { public static void main (String args[]) { SwingUtilities.invokeLater ( new Runnable () { Test arrows = new Test(); public void run () { JFrame frame = new JFrame ( "Arrows" ); frame.add ( new JPanel() { public void paintComponent ( Graphics g ) { arrows.draw ( ( Graphics2D ) g, getWidth(), getHeight() ); } } , BorderLayout.CENTER ); frame.setSize ( 800, 400 ); frame.setDefaultCloseOperation ( JFrame.EXIT_ON_CLOSE ); frame.setVisible ( true ); } } ); } interface Arrow { void draw ( Graphics2D g ); } Arrow[] arrows = { new LineArrow(), new CurvedArrow() }; void draw ( Graphics2D g, int width, int height ) { g.setRenderingHint ( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON ); g.setColor ( Color.WHITE ); g.fillRect ( 0, 0, width, height ); for ( Arrow arrow : arrows ) { g.setColo