How to create a zip file of multiple image files

Question

I am trying to create a zip file of multiple image files. I have succeeded in creating the zip file of all the images but somehow all the images have been hanged to 950 byt

Answer 1

Change this:

while((length=fin.read())>0)

to this:

while((length=fin.read(b, 0, 1024))>0)

And set buffer size to 1024 bytes:

b=new byte[1024];

Answer 2

This is my zip function I always use for any file structures:

public static File zip(List<File> files, String filename) {
    File zipfile = new File(filename);
    // Create a buffer for reading the files
    byte[] buf = new byte[1024];
    try {
        // create the ZIP file
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipfile));
        // compress the files
        for(int i=0; i<files.size(); i++) {
            FileInputStream in = new FileInputStream(files.get(i).getCanonicalName());
            // add ZIP entry to output stream
            out.putNextEntry(new ZipEntry(files.get(i).getName()));
            // 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();
        return zipfile;
    } catch (IOException ex) {
        System.err.println(ex.getMessage());
    }
    return null;
}