I now have this problem. I want to write a excel file hold in this XSSFWorkbook (workbook) obj into a zip file eg(example.zip while contain this example.xlsx file) to a remote server. I have trie...

I am using a ZipOutputStream to zip up a bunch of files that are a mix of already zipped formats as well as lots of large highly compressible formats like plain text. Most of the already zipped f...

I want to create a ZIP file that contains my archived files that I received from the backend, and then send this file to a user. For 2 days I have been looking for the answer and can't find proper ...

I have a requirement to download photos (not in same directory) from S3, ZIP them and again upload to S3 using AWS S3 Java SDK. This zip file size can go in GBs. Currently I am using AWS Lambda whi...

I try to copy a Zip from a Zipinputstream to a Zipoutputstream. I store the Zip as byte[] in a Oracle database. I use Zipinputstream to decompress the zip (later I want to edit the Zip) and then ...

I am trying to add some files to a ZIP file, it creates the file but does not add anything into it. Code 1: String fulldate = year + "-" + month + "-" + day + "-" + min; File dateFolder = new Fil...

In my application there are no of documents(pdf) for a particular tender. I need to create a zip file from those pdf files and allow user to download it. Application is done in JavaEE with struts ...

I have to create two folders inside of a zip file that I create programmatically using ICSharpCode.SharZipLib.Zip. I want to: private void AddToZipStream(byte[] inputStream, ZipOutputStream zipS...

I want to zip a file on Windows (7) with ZipOutputStream. The Problem is that the file name (and file file Content too) contains also Greek characters ("ГП0000660040140521_a.txt", Gamma and Pi). Th...

How would I properly zip bytes to a ByteArrayOutputStream and then read that using a ByteArrayInputStream? I have the following method: private byte[] getZippedBytes(final String fileName, final b...

Consider the code example that put a single file test_file.pdf into zip archive test.zip and then read this archive: import java.io.*; import java.util.zip.ZipEntry; import java.util.zip.ZipInputS...

ZipOutputStream only zips files in a folder. I want to zip subfolders also. How can I achieve this?

I have a function to compress a file and another to decompress it. When I try to decompress an archive I've generated with my own function, there is a null pointer exception because it doesn't foun...

I want to compress an InputStream using ZipOutputStream and then get the InputStream from compressed ZipOutputStream without saving file on disc. Is that possible?

I'm trying to read a zip file, check that it has some required files, and then write all valid files out to another zip file. The basic introduction to java.util.zip has a lot of Java-isms and I'd ...

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 bytes. I don't know whats go...

I have a jsp/servlet web app in which the client can choose a "course" and an "assignment" via dropdown boxes, and then click a button to download all the files in the database that are listed unde...

Problem I have an existing zipfile "main.zip". I want to replace a single file in it, "say main.zip/foo." I am aware of: http://docs.oracle.com/javase/7/docs/api/java/util/zip/ZipOutputStream.ht...

I am trying to read a single file from a java.util.zip.ZipInputStream, and copy it into a java.io.ByteArrayOutputStream (so that I can then create a java.io.ByteArrayInputStream and hand that to a ...