// These are the files to include in the ZIP file
String[] filenames = new String[]{"filename1", "filename2"};

// 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)

{

}