ZipDemo

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<Void, Void>() {

            @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<Void, String>() {

            @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<String> chunks) {
                for (String chunk : chunks) {
                    filecomBox.addItem(chunk);
                }

            }

        }.execute();

    }

}