java Swing读取图片

//package jdbcblob; import java.awt.*; import java.awt.event.*; import javax.swing.*; import com.borland.jbcl.layout.*; import java.io.*; /** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2002</p> * <p>Company: </p> * @author unascribed * @version 1.0 */ public class mainFrame extends JFrame { private JPanel contentPane; private JMenuBar jMenuBar1 = new JMenuBar(); private JMenu jMenuFile = new JMenu(); private JMenuItem jMenuFileExit = new JMenuItem(); private JMenu jMenuHelp = new JMenu(); private JMenuItem jMenuHelpAbout = new JMenuItem(); private JToolBar jToolBar = new JToolBar(); private JButton jButton1 = new JButton(); private JButton jButton2 = new JButton(); private JButton jButton3 = new JButton(); private ImageIcon image1; private ImageIcon image2; private ImageIcon image3; private JLabel statusBar = new JLabel(); private BorderLayout borderLayout1 = new BorderLayout(); private JMenuItem jMenuItem1 = new JMenuItem(); private JMenuItem jMenuItem2 = new JMenuItem(); private JPanel displaypanel = new JPanel(); private JTextArea messages = new JTextArea(); private JPanel graphicpanel = new JPanel(); private XYLayout xYLayout1 = new XYLayout(); private BoxLayout2 boxLayout21 = new BoxLayout2(); //Construct the frame public mainFrame() { enableEvents(AWTEvent.WINDOW_EVENT_MASK); try { jbInit(); } catch(Exception e) { e.printStackTrace(); } } //Component initialization private void jbInit() throws Exception { image1 = new ImageIcon(jdbcblob.mainFrame.class.getResource("openFile.gif")); image2 = new ImageIcon(jdbcblob.mainFrame.class.getResource("closeFile.gif")); image3 = new ImageIcon(jdbcblob.mainFrame.class.getResource("help.gif")); //setIconImage(Toolkit.getDefaultToolkit().createImage(mainFrame.class.getResource("[Your Icon]"))); contentPane = (JPanel) this.getContentPane(); contentPane.setLayout(borderLayout1); this.setSize(new Dimension(592, 421)); this.setTitle("主程序窗口"); statusBar.setBorder(BorderFactory.createEtchedBorder()); statusBar.setText(" "); jMenuFile.setText("File"); jMenuFileExit.setText("Exit"); jMenuFileExit.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { jMenuFileExit_actionPerformed(e); } }); jMenuHelp.setText("Help"); jMenuHelpAbout.setText("About"); jMenuHelpAbout.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { jMenuHelpAbout_actionPerformed(e); } }); jButton1.setIcon(image1); jButton1.setToolTipText("Open File"); jButton2.setIcon(image2); jButton2.setToolTipText("Close File"); jButton3.setIcon(image3); jButton3.setToolTipText("Help"); jMenuItem1.setText("写BLOB"); jMenuItem1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(ActionEvent e) { jMenuItem1_actionPerformed(e); } }); jMenuItem2.setText("读BLOB"); jMenuItem2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(ActionEvent e) { jMenuItem2_actionPerformed(e); } }); graphicpanel.setBorder(BorderFactory.createLoweredBevelBorder()); graphicpanel.setLayout(xYLayout1); displaypanel.setLayout(boxLayout21); jToolBar.add(jButton1); jToolBar.add(jButton2); jToolBar.add(jButton3); contentPane.add(displaypanel, BorderLayout.CENTER); jMenuFile.add(jMenuItem1); jMenuFile.add(jMenuItem2); jMenuFile.addSeparator(); jMenuFile.add(jMenuFileExit); jMenuHelp.add(jMenuHelpAbout); jMenuBar1.add(jMenuFile); jMenuBar1.add(jMenuHelp); this.setJMenuBar(jMenuBar1); contentPane.add(statusBar, BorderLayout.SOUTH); contentPane.add(jToolBar, BorderLayout.NORTH); displaypanel.add(messages, null); displaypanel.add(graphicpanel, null); } //File | Exit action performed public void jMenuFileExit_actionPerformed(ActionEvent e) { System.exit(0); } //Help | About action performed public void jMenuHelpAbout_actionPerformed(ActionEvent e) { mainFrame_AboutBox dlg = new mainFrame_AboutBox(this); Dimension dlgSize = dlg.getPreferredSize(); Dimension frmSize = getSize(); Point loc = getLocation(); dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y); dlg.setModal(true); dlg.pack(); dlg.show(); } //Overridden so we can exit when window is closed protected void processWindowEvent(WindowEvent e) { super.processWindowEvent(e); if (e.getID() == WindowEvent.WINDOW_CLOSING) { jMenuFileExit_actionPerformed(null); } } /*some procedures used for write blob*/ void jMenuItem1_actionPerformed(ActionEvent e) { try { WriteBlobToDb w=new WriteBlobToDb(); w.sendToDb() ; } catch (Exception ex) { ex.printStackTrace() ; } finally { System.out.print("Can not process any longer!") ; } } /*end of writing blob*/ void jMenuItem2_actionPerformed(ActionEvent e) { try { ReadBlobFromDb w=new ReadBlobFromDb(); w.readFromDb() ; } catch (Exception ex) { ex.printStackTrace() ; } finally { System.out.print("Write OK!") ; } } }