Extract zip file using java program

If you're wondering how to get the file content from each ZipEntry it's actually quite simple. Here's a sample code:. Actually, it is now a unified API which allows you to treat Zip files exactly like normal files. Sample code you can use to let Tika take care of container files for you. Form what I can tell, the accepted solution will not work for cases where there are nested zip files.

Tika, however will take care of such situations as well. My way of achieving this is by creating ZipInputStream wrapping class that would handle that would provide only the stream of current entry:. One advantage of this approach: InputStreams are passed as an arguments to methods that process them and those methods have a tendency to immediately close the input stream after they are done with it.

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Active 4 months ago. Viewed k times. S Jagdeesh S Jagdeesh 1, 2 2 gold badges 25 25 silver badges 46 46 bronze badges. Why not pass the zip file straight to Apache Tika? It'll then call the recursing parser you supply for each file in the zip, so you don't have to do anything special! That's what I was wondering but couldn't get enough tutorial in how to do that. I am also little worried about this - javamex. Tika uses commons compress to get around a lot of those issues — Gagravarr.

I think there's a disrespection for users to have apps so big only for trivial tasks. Add a comment. ZipEntry ;. ZipInputStream ;. Path of zip file. Destination path for extracted file. Sample usage of this prgram. Output of this program would be. File Extracted from zip file. Want to learn quickly? Try one of the many quizzes. More than Java questions with detailed answers.

Yes, I want to learn Java quickly. You may also like. Add Comment. Now close all IO streams. Proper closing of IO streams will prevent the corruption of zip files. Unzipping file means expanding the compressed information to make file as like its original form means before compression. For that ZipInputStream class will be useful. Step 1: We should create file output stream for output folder. So that it can write files to that output folder.

If output folder is not exists then create output folder. Use mkdirs method. If any parent directories are not there then it will create them also.

Step 2: Here we have only one file that is zip file. So create one file input stream this is enough. This will read contents from zip file. Step 3: Now create Zip input stream for this file input stream.

This zip input stream can understand the zip file contents. It will change zip form to normal form. Comment below if you have any queries or found any information incorrect in above tutorial for zip and unzip files in Java.

Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Home Contact About Advertise. Neeraj Mishra IO Leave a comment. Java Zip and Unzip Files and Folders Here we will learn about how to zip and unzip files and folders in java. How to Zip Files in Java? Now we will see one example. Procedure : Step 1: We should list out all files in the directory. Step 4: Now we have to zip each file in list according to their paths. Create an input stream for a file.

So that it can read file contents. So that we can add this file to zip out stream.