I am struggling with opening a PDF file as a user's documentation in JavaFX program.
Code works fine whenever I open it using IDE. The problem begins when I build my program and try to open it from distributions folder.
For example, this method works, when I am using IDE:
public void helpButtonOnAction(ActionEvent actionEvent) {
File file = new File("src/main/resources/pl/com/buleek/docs.pdf");
hostServices.showDocument(file.getAbsolutePath());
}
But obviously, when I pack my program with gradle build, it is in a directory:
C:\Users\Matthew\Desktop\xxx\ProgramNameFolder\build\distributions\ProgramName\bin
And from now on, it can't see src/main/recources/pl/com/buleek/docs.pdf, because in ProgramNameFolder there are only bin with ProgramName.bat and lib folders.
Is there a way (after building distributions) to paste another folder inside my ProgramName folder, put there my docs.pdf file, and then set code like:
public void helpButtonOnAction(ActionEvent actionEvent) {
File file = new File("ProgramName/docs/docs.pdf");
hostServices.showDocument(file.getAbsolutePath());
}
Or shall I use some command to pack pdf file with my program?
Your build tool will usually place your resources in a jar. As your PDF file is already in your resources folder, it should be packaged into your application jar by default.
You can read resources from your jar file via YourClass.class.getResourceAsStream(), then write the stream to a temp file using basic Java I/O APIs, specifically the version of Files.copy(...) which takes an input stream as a parameter.
The intermediate step of extracting the PDF file from your jar and writing to a temp file in the file system is necessary because you are using host services to launch an external browser and, unlike java, the external browser will be unable to directly read resources from a jar file.
You can convert the file name of the temporary file to a URL string and show it via HostServices.showDocument(uri) as you are currently doing.
If the browser is capable of displaying PDFs (most are) then the PDF will be displayed in the browser, otherwise, the browser will usually allow the user to download the PDF to a file location of their choice on their machine and open the PDF via an external application.
I want to run a notebook that uses many header files defined in the directory. So basically I want to upload the entire directory to Google Colab so that I can run the notebook. But I am unable to find any such options and only able to upload files not complete folders. So can someone tell me how to upload entire directory to google colab?
I suggest you not to upload them just in Colab, since when you're restarting the runtime you will lose them (just need to re-upload them, but it can be an issue with slow connections).
I suggest you to use the google.colab package to manage files and folders in Colab. Just upload everything you need to your google drive, then import:
from google.colab import drive
drive.mount('/content/gdrive')
In this way, you just need to login to your google account through google authentication API, and you can use files/folders as if they were uploaded on Colab.
EDIT May 2022:
As pointed out in the comments, using Google Drive as storage for a large number of files to train a model is painfully slow, as described here: Google Colab is very slow compared to my PC. The better solution in this case is to zip the files, upload them to colab and then unzip them using
!unzip file.zip
More unzip options here: https://linux.die.net/man/1/unzip
You can zip them, upload, then unzip it.
!unzip file.zip
The easiest way to do this, if the folder/file is on your local drive:
Compress the folder into a ZIP file.
Upload the zipped file into colab using the upload button in the File section. Yes, there is a File section, see the left side of the colab screen.
Use this line of code to extract the file. Note: The file path is from colab's File section.
from zipfile import ZipFile
file_name = file_path
with ZipFile(file_name, 'r') as zip:
zip.extractall()
print('Done')
Click Refresh in the colab File section.
Access the files in your folder through the file paths
Downside: The files will be deleted after the runtime is over.
You can use some part of these steps if your file is on a Google Drive, just upload the zipped file to colab from Google Drive.
you can create a git repository and push the files and folders to it,
and then can clone the repository in colaboratory with the command
!git clone https://github.com/{username}/{projectname}.git
i feel this method is faster.
but if the file size is more than 100 mb you will have to zip the file or will have to add extentions to push it to github.
for more information refer the link below.
https://help.github.com/en/github/managing-large-files/configuring-git-large-file-storage
The best way to approach this problem is simple yet tricky sometimes.
You first need to compress the folder into a zipped file and upload the same into your google drive.
While doing so, Make sure that the folder is in the root directory of the drive and not in any other subfolder!. If the compressed folder/data is in other subfolder, you can easily move the same into the root directory.
Compresses folder/data in another subfolder often messes with the unzipping process when you will be specifying the file location.
Once you did the afore mentioned tasks, enter the following commands in the colab to mount your drive:
from google.colab import drive
drive.mount('/content/gdrive')
This will ask for an access token that can be generated by clicking on the url displayed in the output of the same cell
!ls gdrive/MyDrive
Check the contents of the drive by executing the above command and ensure that your folder/data is displayed in the output.
!unzip gdrive/MyDrive/<File_name_without_space>.zip
eg:
!unzip gdrive/MyDrive/data_folder.zip
Executing the same will start unzipping your folder into the memory.
Congrats! You have successfully uploaded your folder/data into the colab.
zip your files zip -r file.zip your_folder and then:
from google.colab import files
from zipfile import ZipFile
with ZipFile(files.upload(), 'r') as zip:
zip.extractall()
print('Done')
So here's what you can do:
-upload the dataset desired folder to your drive
-over colab, mount the drive wherein this
"from google.colab import drive
drive.mount('/content/gdrive')"
automatically shows up and you just need to run it
-then check for your file over the Files section on the left-hand side (if folder not visible try refreshing, also there should be a drop-down arrow next to it where you can check all the files under the folder )
-left-click over the folder wherein you get a COPY PATH option
-paste the copied path over the desired location in your colab
I have a WPF application. The client's database file is a .SQLite file and is created during the first run of the application. Also some excel files are also generated during run time. All these files are stored in AppData instead of the root directory.
I have given the following path for the database but it still creates the file in AppData folder.
System.IO.Directory.GetParent(System.Reflection.Assembly.GetExecutingAssembly().Location) + #"\NuEattendance_Faculty.sqlite"
Please help!!!
My query has been resolved. The application couldn't get the required permission and hence it created the files in AppData folder
I'm making a JApplet and need to make a JAR file to connect to a .htm file with the applet tag. The simple solution I could think of was to use the tool in drjava that says "Create Jar File From Project..." but alas, it's not highlighted for some reason, so I can't do that. What I'm really looking for is either (a) an explanation as to why drjava can't turn my classes into a jar file, (b) an alternative to allow me to create this jar file, or ideally (c) both. Thanks for your help ahead of time.
I don't use Drjava, but here is how you can create a JAR file from the command line without any IDE specific complications.
Simply go to the folder/directory where your project is located. Let's say your class files are located in the bin folder. You can then use
jar cvf myapplet.jar -C bin .
The JAR is then ready to be deployed.
I get "Error opening ... file ... (No such file or directory)". However I do not control the file access - a third-party library is trying to open a file in the .war.
It works fine when using an open directory structure on my own computer.
My question is: is normal file access supposed to work within a .war? If not, should I just deploy a directory instead of a .war? Or is there a better way?
Am using glassfish.
.war file should be unpacked by your (application) server, so your third-party lib should operate with files from unpacked .war.