package swing.zip;import java.awt.BorderLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.File;import java.io.FileInputStream;import java.util.List;import java.util.Scanner;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;import javax.swing.JComboBox;import javax.swing.JFileChooser;import javax.swing.JFrame;import javax.swing.JMenu;import javax.swing.JMenuBar;import javax.swing.JMenuItem;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.SwingUtilities;import javax.swing.SwingWorker;/*2015-7-8*/public class ZipTest {    public static void main(String[] args) {        SwingUtilities.invokeLater(new Runnable() {            @Override            public void run() {                ZipTestFrame frame = new ZipTestFrame();                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);                frame.setVisible(true);                frame.setLocationRelativeTo(null);            }        });    }}class ZipTestFrame extends JFrame {    private static final long serialVersionUID = 1L;    public static final int DEFAULT_WIDTH = 400;    public static final int DEFAULT_HEIGHT = 400;    private JComboBox filecomBox;    private JTextArea fileText;    private String zipName;    public ZipTestFrame() {        setTitle("ZipTest");        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);        JMenuBar menuBar = new JMenuBar();        JMenu menu = new JMenu("File");        JMenuItem openItem = new JMenuItem("Open");        menu.add(openItem);        openItem.addActionListener(new ActionListener() {            @Override            public void actionPerformed(ActionEvent e) {                JFileChooser chooser = new JFileChooser();                chooser.setCurrentDirectory(new File("."));                int r = chooser.showOpenDialog(ZipTestFrame.this);                if (r == JFileChooser.APPROVE_OPTION) {                    zipName = chooser.getSelectedFile().getPath();                    filecomBox.removeAllItems();                    scanZipFile();                }            }        });        JMenuItem exitItem = new JMenuItem("Exit");        menu.add(exitItem);        exitItem.addActionListener(new ActionListener() {            @Override            public void actionPerformed(ActionEvent e) {                System.exit(0);            }        });        menuBar.add(menu);        setJMenuBar(menuBar);        fileText = new JTextArea();        filecomBox = new JComboBox();        filecomBox.addActionListener(new ActionListener() {            @Override            public void actionPerformed(ActionEvent e) {                loadZipFile((String) filecomBox.getSelectedItem());            }        });        add(filecomBox, BorderLayout.SOUTH);        add(new JScrollPane(fileText), BorderLayout.CENTER);    }    protected void loadZipFile(final String name) {        filecomBox.setEnabled(false);        fileText.setText("");        new SwingWorker
     
      () {            @Override            protected Void doInBackground() throws Exception {                ZipInputStream zin = new ZipInputStream(new FileInputStream(zipName));                ZipEntry entry;                while ((entry = zin.getNextEntry()) != null) {                    if (entry.getName().equals(name)) {                        Scanner in = new Scanner(zin);                        while (in.hasNextLine()) {                            fileText.append(in.nextLine());                            fileText.append("\n");                        }                    }                    zin.closeEntry();                }                zin.close();                return null;            }            @Override            protected void done() {                filecomBox.setEnabled(true);            }        }.execute();    }    protected void scanZipFile() {        new SwingWorker
      
       () {            @Override            protected Void doInBackground() throws Exception {                ZipInputStream zin = new ZipInputStream(new FileInputStream(zipName));                ZipEntry entry;                while ((entry = zin.getNextEntry()) != null) {                    publish(entry.getName());                    zin.closeEntry();                }                zin.close();                return null;            }            @Override            protected void process(List
       
         chunks) {                for (String chunk : chunks) {                    filecomBox.addItem(chunk);                }            }        }.execute();    }}