This Java tip illustrates a method of retrieving a compressed file from a ZIP file. This example reads a ZIP file and decompresses the first entry. Developer may modify the code according to his needs.

  try {
        // Open the ZIP file
        String sourcefile = "";
        ZipInputStream in = new ZipInputStream(new FileInputStream(sourcefile));
        // Get the first entry
        ZipEntry entry = in.getNextEntry();
        // Open the output file
        String targetfile = "target";
        OutputStream out = new FileOutputStream(targetfile);
        // Transfer bytes from the ZIP file to the output file
        byte[] buf = new byte[1024];
        int len;
        while ((len = > 0) {
            out.write(buf, 0, len);
        // Close the streams
    } catch (IOException e) {