Java binary file compare

Preventing churn with customer retention marketing. How to upload files to cloud storage. Top 5 benefits of customer retention. Dear Sirs, I would very much appreciate if you could offer me a guide on the following problem.

We intend to identify instances of copied exams automatically. Is there a tool that can automatically compare texts say in a set of text files corresponding to answers in the form of assays and be able to organize them in clusters according to the level of similarity, and display results in a visual format or rather, a tabular form. Ideally, the teacher would be able set parameters e.

Thanks in advance for your kind attention, JMD. This list is really nice, I would also add juxtappose. Thanks for a good selection of tools! I also wanted to add Pics. It's a DAM service with a good built-in file comparison tool for all sorts of images and videos. Sometimes you want to compare a whole folder of word documents or you want the comparison to happen on a server where the user can not start a program interactively.

We've just launched a new web-based text and document comparison tool - QCanywhere, based on the technology from Docu-Proof discussed in this post. This tool also compare spaces in your documents and generates a detailed report highlighting the changes. The information that you gave was very helpful. I would like ask you want pogram would be the best for checking and compearing letters of the the hebrew script I need it to compear them by their form of the letter.

Does you want to get a compare tool which can ignore the string change in different languages? Do you want to ignore the change in "" and then only compare the document structure and the rest text?

Thanks, Yeti. Does anyone know which one of these programs would best do a keyword search on 2 files and generate a report comparing those 2 documents based on the keyword search? Does anyone know of a good compare tool that will compare the same file in multiple languages against each other? Something that could watch for the structure of a document? I like the "function view" feature and also it's syntax-aware for many languages as C.

It's very helpful when I compare a moved method. Hi, Is there any tool to compare the two website, whether it is in synch or not. Please suggest some ideas. I have used Beyond Compare 3 for file comparison and found it very useful for me. It is very useful for me and i am using.

Hi, If anyone is aware, please help me with this. Is there any tool to compare text in jpeg file with text written in a notepad file. OMS Cbhatia. Read the contents of the files and use the MessageDigest class to create an MD5 hash of the contents of each file. Then compare the two hashes. This has the advantage of working for binary files as well. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?

Collectives on Stack Overflow. Learn more. How to compare the contents of two text files and return "Same Content" or "Different Content"? Asked 12 years, 3 months ago. Active 4 years, 7 months ago.

Viewed 55k times. Improve this question. James T Snell 1, 1 1 gold badge 13 13 silver badges 26 26 bronze badges. Stefannus Temaatmadja Stefannus Temaatmadja. Use FileUtils for this.

Very easy to implement. Example here: avajava. Example here: avajava. I'd post this as a real answer, but someone got confused and thought it's not a real question. Add a comment. Active Oldest Votes. The simplest way is to read the contents into two strings e.

Ashish Aggarwal 2, 2 2 gold badges 21 21 silver badges 43 43 bronze badges. Brian Agnew Brian Agnew k 36 36 gold badges silver badges bronze badges. I'm not the answer isn't pretty much in the above — Brian Agnew.

If the files are too big, you could always read them in fixed-size chunks and compare a chunk at a time. Actually this would be a more efficient solution even if the files aren't big enough to blow memory, as once you find one character different, they must be different, and there's no point reading more. Also, if the files are or could be binary, you probably should read them into a byte array rather than a String. The question says "2 text files" — Brian Agnew. Eric Petroelje Eric Petroelje True, but isn't definitive.

Two files could hash to the same value but be different. I suppose an MD5 hash is big enough and unpredictable enough that this is unlikely, but I'm always nervous of algorithms that work "most of the time".

A much bigger problem is that this method is fairly inefficient -- it always reads the entirety of both files, even if for example there's a difference in the first byte.