java 打包 zip

import java.util.zip.*;
import java.io.*;
public class zip
{
    public static void main(String[] argc)
    {
        // These are the files to include in the ZIP file
        String[] filenames = new String[]{"Uzip.java", "zip.java"};

        // Create a buffer for reading the files
        byte[] buf = new byte[1024];

        try {
        // Create the ZIP file
        String outFilename = "outfile.zip";
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outFilename));

        // Compress the files
        for (int i=0; i<filenames.length; i++) {
        FileInputStream in = new FileInputStream(filenames[i]);

        // Add ZIP entry to output stream.
        out.putNextEntry(new ZipEntry(filenames[i]));

        // Transfer bytes from the file to the ZIP file
        int len;
        while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
        }

        // Complete the entry
        out.closeEntry();
        in.close();
        }

        // Complete the ZIP file
        out.close();
        } catch (IOException e) {
            System.out.println(e.toString());
        }
    }
}

解压缩：

import java.util.zip.*;
import java.io.*;
public class Uzip
{
public static void main(String[] argc)
{
    try {
    // Open the ZIP file
    String inFilename = "test.zip";
    ZipInputStream in = new ZipInputStream(new FileInputStream(inFilename));

    // Get the first entry
    ZipEntry entry = in.getNextEntry();

    // Open the output file
    String outFilename = "o";
    OutputStream out = new FileOutputStream(outFilename);

    // Transfer bytes from the ZIP file to the output file
    byte[] buf = new byte[1024];
    int len;
    while ((len = in.read(buf)) > 0) {
    out.write(buf, 0, len);
    }

    // Close the streams
    out.close();
    in.close();
    } catch (IOException e) {
        System.out.println(e.toString());
    }
}
}