Issue with docx file comparison using md5 hash

public boolean compareFiles(File newFileInput,File oldFileInput) throws IOException {
    HashCode newFile = Files.asByteSource(newFileInput).hash(Hashing.md5());
    HashCode oldFile = Files.asByteSource(oldFileInput).hash(Hashing.md5());
    System.out.println("HashCode New File : "+newFile +"\nHashCode Old File : "+oldFile);
    if(newFile.equals(oldFile))
    {
      return true;
    }
    else
    {
       return false;
    }
}

i have used above code to find the hashcode of two differnet docx file in order to compare them for file content,style etc.
Despite of same content and style, the hashcode comes different.

any way for comparing docx files for content and style ?

Determining, whether two complex file types are equalish is always very tricky, if not impossible. DOCX contains much more than just some text and whether it is bold or not.

There are ways to make the document look exactly the same with different properties and there are also lots of metadata saved in (the author for example). It is then not just a technical problem, it is more about a philosophical problem. Let me give you an example:

You are expected to compare two cars and say, if they are the same or not. There are some obvious cases when they are objectively different, like a heavy lorry and a small city EV. But what if they are of the same type, but of a different color? Or same type, same color, but different amount of fuel in the tank?

The same goes for DOCX. Same text, but different colors? Same content, but different authors? Same … but different …?

Maybe you can disclose some more information about what you are trying to achieve, otherwise I doubt we can help you more.

If you really need to somehow compare two DOCX files (or any other types of similar complexity), find a library that can parse them and build the logic by yourself. However one might spend years doing so without a satisfactory result.

If you are more into dirty hacky solutions, use a library to build an image of the pages of the document and compare them as images. This will ensure the pages look the same. However, based on your definition of equality, that doesn't have to mean they are the same documents.

If you can choose another file format, it might be a good idea to do so. However, there will still be some tricky parts. Even Markdown (the language we use to format Q&A on this site) cannot be compared byte to byte.

This
**weird**
post

will render the same as

This **weird** post

into

This weird post.

There were multiple suggestions and answers to my question, thanks for that.
The reasons for mismatch in docx file is there in the metadata info, everytime we create a doc/docx file, the timestamp changes. Though i tried to change the timestamp(accessed,modified and created) of both the files to make it same and compare, which didn't work out. The reason is apart from these time stamps, there is a meta info called Zip Modify Date, which isn't visible when we see the file properties. this timestamp i found as one of the reason there was mismatch in hashcode. Also, the base64 encoded strings was different because of the zip timestamp.

So, the options i had to do the comparison were :

1. converting the docx file to xml file
2. Zip the docx file, unzip it and iterate though all the xml files to find the
   hashcode and compare the hascodes.(suggeted as of the answers)

"2" was good but it required lot of iterations and unzipping would create lot many folders.

"1" , was straight fwd, as i tried it using external lib -> docx4j , which converted the docx to xml and then i could match the hashcode , it worked.

https://stackoverflow.com/questions/20364845/convert-docx-to-xml-file

I had to try different options since i was looking for simplest and not so complex way to compare content and styles of the word document.