Develop Reference

Can docx4j work in google app engine

I want to create an application deployed into the google app engine and I want to use the docx4j library. My application will read in a preexisting docx file (perhaps from a database) and then parse the docx document and replace some content, before outputting the final version as a PDF (also stored in a database)
I know app enine has a quite a few restrictions on what can and cannot run, and I will be using Java to do this. I know it does not allow writing to the filesystem, hence my comment about needing to get the input file and generating the output file into a database.
Does anyone know if the docx4j library, and it's dependencies, will be allowed to run in the app engine environment?
Thanks!

Java is one of the languages that is supported in both of the Google App Engine environments: standard and flexible. Go to these GCP docs to check the differences between those and choose the environment suitable for you. You can use Maven to handle your dependencies (the Docx4J library is available in Maven Repository).
When it comes to storing your files, you have a few options that can be used with Google App Engine app: Google Cloud Datastore, Google Cloud SQL and Google Cloud Storage. Their comparison can be found in GCP docs here.

LibGDX: How can I access an xml file from core?

I've got an xml file I need to access(read only) from core. I tried putting it in the Android assets folder since that's shared, but ironically only the desktop version of my app can access it, the Android one doesn't see it at all. "Gdx.files.getLocalStoragePath" points to a different location on the Android version. Is there a spot I can store an xml file so I can access it via core?

create FileHandle object using your file.
FileHandle handle = Gdx.files.internal("data/myfile.xml");
parse that using XmlReader, that is in libgdx bundle.

Java in Google App Engine: alternative for fileoutputstream

So I have a Java project that gets a content through an API request. Then, it saves the content in a file, which it uploads using another API. Now I want to use the Google App Engine, which doesn't support the fileoutputstream. I know you can use the datastore, but it can't really save a file.
Is there an alternative for this problem?

Upload feature from Google drive & local

Is there a way to upload a file from Google Drive to Blobstore using a Google Appengine Form.
In have a user form which require attachment feature . The attachment can be a file from local or from google Drive .
It Would be nice if any Google Developer post a Java reference code

You can use the Google Docs Picker to select a file on disk or on Google Drive : https://developers.google.com/picker/docs/?hl=fr
For Google Drive files, you can download its on App Engine and then store into the Blobstore or Google Cloud Storage : https://developers.google.com/drive/web/manage-downloads
It's just reading file input stream and write file output stream where you want (but not on file system because it's impossible on App Engine for security reasons)
Relative to Google, there is no good reasons to use blobstore anymore so I advise you to use Cloud Storage.

Reduce the big size of my Android application resource

I am currently developing an android application that useLibsvm library for data
classification.
To use the Libsvm I should provide file text describing data
the size of my data=1,3G
I have placed all my files in assets Folder => copied them in sdCard and then running the
classification
The problem Now is that my application take a lot of time to be installed on my device!
It is possible to compress those files and the decompress them while running my
classification?
And How to do this in Android

move your resources to desktop and delete them from your app, this would be helpful for testing your app.

You could zip the file on the installation and make your service unzips it the first time it's used.
You may zip/unzip using the java.util.zip standard package.