Question

byte[] buf = new byte[1024];//time to make zip file
    String zipName="name.zip";
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipName));

    for(int i=0; i<copy.length; i++){//put all pdfs in the zip
        FileInputStream zipFile = new FileInputStream(copy[i]);
        out.putNextEntry(new ZipEntry(copy[i]));
        int len;
        while((len=zipFile.read(buf))>0){
            out.write(buf, 0, len);             
        }
        out.closeEntry();
        zipFile.close();
    }   
out.close();

copy is an array of strings which contain the file path for each file I want (for example C:\files\test.pdf). It compiles and runs fine with no exceptions and creates the zip folder, but nothing is in said zip folder.

Answer 1

fixed it, posting answer if anyone else needs it.

out.putNextEntry(new ZipEntry(files[i].getName()));

files is an array of files (which I used to create copy).