- Java code
import java.awt.EventQueue;import java.awt.event.*;import java.io.*;import javax.swing.*;public class ImageViewer{ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { JFrame frame = new ImagerViewerFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } });}}class ImagerViewerFrame extends JFrame{ public ImagerViewerFrame() { setTitle("ImageViewer"); setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT); label = new JLabel(); add(label); chooser = new JFileChooser(); chooser.setCurrentDirectory(new File(".")); JMenuBar menuBar = new JMenuBar(); setJMenuBar(menuBar); JMenu menu = new JMenu("File"); menuBar.add(menu); JMenuItem openItem = new JMenuItem("Open"); menu.add(openItem); openItem.addActionListener(new ActionListener() { public void actionPerforme(ActionEvent event) { int result = chooser.showOpenDialog(null); if (result == JFileChooser.APPROVE_OPTION) { String name = chooser.getSelectedFile().getPath(); label.setIcon(new ImageIcon(name)); } }}); JMenuItem exitItem = new JMenuItem("Exit"); menu.add(exitItem); exitItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { System.exit(0); } }); } private JLabel label; private JFileChooser chooser; private static final int DEFAULT_WIDTH = 300; private static final int DEFAULT_HEIGHT = 400;}openItem.addActionListener(new ActionListener()
出错的源头是在这个地方 以及他对应的 });
这个符号..
程序可以正常运行.但是点击File后选择文件即会报错
我是在看JAVA核心技术卷1 里跟着学跟着做发现的问题..参照书给的源代码跟书的源代码不一样..实在无能威力 请求CSDN的JAVA高手帮忙看看..感谢
------解决方案--------------------------------------------------------
楼主这么粗心，public void actionPerforme(ActionEvent event)
方法名写错了，少了个d，建议以后用eclipse自动生成代码