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Android Studio NoSuchFileException

I've finished an app and have been attempting to have that app log some data in a text file. I have a few questions about creating files and file paths with Android Studio. I'm not well versed in the editor so perhaps my questions are simple. I'm logging the data in an activity that extends MainActivity, declared as LoggerActivity.
public class LoggerActvitivty extends MainActivity{
public boolean bNewUser = true;
public String sFileName;
public void writeToFile(HashMap hmSaleToSave) {
if (bNewUser) {
System.out.println(hmSaleToSave);
sFileName = Environment.DIRECTORY_DOWNLOADS + "/Sales-" + LocalDateTime.now() + ".txt";
try {
if(!Files.exists(Paths.get(sFileName))) {
Files.createFile(Paths.get(sFileName));
Files.write(Paths.get(sFileName), sFileName.getBytes(StandardCharsets.UTF_8));
}
System.out.println("FILE WRITE EXECUTED");
System.out.println("Location" + sFileName);
} catch (IOException e) {
e.printStackTrace();
}
} else {
}
}
}
Nothing crash's, but I believe I'm providing a null directory resulting in this logcat error
W/System.err: java.nio.file.NoSuchFileException: Download/Sales-2021-08-16T07:44:36.321.txt
I would like the logs to go to my tablets download directory. My first question is should I be using a different method to get my directory rather than through Enviornment.DIRECTORY_DOWNLOADS? Additionally if the path doesn't exist Files.createFile(....) should create the path too? Or does that just create the file at the specified path (sFileName)?

Move and replace file in a loop problem showing is being used by another process problem

I'm creating every time a file moving and replacing it from source folder to a destination folder with the same name
in a loop and this is the problem :
For the first move and replace, it works well then it yells the process cannot access the file because it is being used by another process. when replacing the file in the destination folder
and this is the method moving the file and replacing it every time
public static void moveAndReplaceFile(String source, String destination) {
try {
Files.move(
Paths.get(source),
Paths.get(destination),
StandardCopyOption.REPLACE_EXISTING);
} catch (IOException e) {
LOGGER.error("Fail when moving and replacing");
}
}
can you help me guys? thanks in advance

If its a network storage that you are using, then this can happen. As a workaround, you can try adding a sleep of 60seconds before executing the Files.Move API.

I suggest you to add the ATOMIC_MOVE option if supported :
public static void moveAndReplaceFile(String source, String destination) {
try {
Files.move(
Paths.get(source),
Paths.get(destination),
StandardCopyOption.REPLACE_EXISTING,
StandardCopyOption.ATOMIC_MOVE);
} catch (IOException e) {
LOGGER.error("Fail when moving and replacing");
}
}
See : https://docs.oracle.com/javase/tutorial/essential/io/move.html

Access public assets with Java in Play Framework

Is it possible to access Assets inside the Java code in Play Framework? How?
We access assets from the scala HTML templates this way:
<img src="#routes.Assets.versioned("images/myimage.png")" width="800" />
But I could not find any documentation nor code example to do it from inside the Java code. I just found a controllers.Assets class but it is unclear how to use it. If this is the class that has to be used, should it maybe be injected?

I finally found a way to access the public folder even from a production mode application.
In order to be accessible/copied in the distributed version, public folder need to be mapped that way in build.sbt:
import NativePackagerHelper._
mappings in Universal ++= directory("public")
The files are then accessible in the public folder in the distributed app in production form the Java code:
private static final String PUBLIC_IMAGE_DIRECTORY_RELATIVE_PATH = "public/images/";
static File getImageAsset(String relativePath) throws ResourceNotFoundException {
final String path = PUBLIC_IMAGE_DIRECTORY_RELATIVE_PATH + relativePath;
final File file = new File(path);
if (!file.exists()) {
throw new ResourceNotFoundException(String.format("Asset %s not found", path));
}
return file;
}
This post put me on the right way to find the solution: https://groups.google.com/forum/#!topic/play-framework/sVDoEtAzP-U

The assets normally are in the "public" folder, and I don't know how you want to use your image so I have used ImageIO .
File file = new File("./public/images/nice.png");
boolean exists = file.exists();
String absolutePath = file.getAbsolutePath();
try {
ImageInputStream input = ImageIO.read(file); //Use it
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("EX = "+exists+" - "+absolutePath);

My .jar file won't open MP3 files (I'm using Jlayer - JZoom library)

I did this small Java project that in it's turn opens different MP3 files. For that I downloaded the JLayer 1.0.1 library and added it to my project. I also added the MP3 files to a package on my project -as well as some JPG images- so as to obtain them from there, and I'm using a hashmap (mapa) and this method to get them:
public static String consiguePath (int i) {
return AppUtils.class.getClass().getResource("/Movimiento/" + mapa.get(i)).getPath();
}
so as to avoid absolute paths.
When I open an MP3 file I do this:
try {
File archivo = new File(AppUtils.consiguePath(12));
FileInputStream fis = new FileInputStream(archivo);
BufferedInputStream bis = new BufferedInputStream(fis);
try {
Player player = new Player(bis);
player.play();
} catch (JavaLayerException jle) {
}
} catch (IOException e) {
}
The whole thing runs perfectly in NetBeans, but when I build a .jar file and execute it it runs well but it won't open the MP3 files. What called my attention is that it doesn't have trouble in opening the JPG files that are on the same package.
After generating the .jar I checked the MyProject/build/classes/Movimiento folder and all of the MP3 files were actually there, so I don't know what may be happening.
I've seen others had this problem before but I haven't seen any satisfactory answer yet.
Thanks!

Change the consiguePath to return the resulting URL from getResource
public static URL consiguePath(int i) {
return AppUtils.class.getClass().getResource("/Movimiento/" + mapa.get(i));
}
And then use it's InputStream to pass to the Player
try {
URL url = AppUtils.consiguePath(12);
Player player = new Player(url.openStream());
player.play();
} catch (JavaLayerException | IOException e) {
e.printStackTrace();
}
Equally, you could just use Class#getResourceAsStream
Resources are packaged into your Jar file and can no longer be treated as Files

Exporting image in runnable jar doesn't work

I'm having a weird problem in java. I want to create a runnable jar:
This is my only class:
public class Launcher {
public Launcher() {
// TODO Auto-generated constructor stub
}
public static void main(String[] args) {
String path = Launcher.class.getResource("/1.png").getFile();
File f = new File(path);
JOptionPane.showMessageDialog(null,Boolean.toString(f.exists()));
}
}
As you can see it just outputs if it can find the file or not. It works fine under eclipse (returns true). i've created a source folder resources with the image 1.png. (resource folder is added to source in build path)
As soon as I export the project to a runnable jar and launch it, it returns false.
I don't know why. Somebody has an idea?
Thanks in advance
edit: I followed example 2 to create the resources folder: Eclipse exported Runnable JAR not showing images

If you would like to load resources from your .jar file use getClass().getResource(). That returns a URL with correct path.
Image icon = ImageIO.read(getClass().getResource("image´s path"));
To access images in a jar, use Class.getResource().
I typically do something like this:
InputStream stream = MyClass.class.getResourceAsStream("Icon.png");
if(stream == null) {
throw new RuntimeException("Icon.png not found.");
}
try {
return ImageIO.read(stream);
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
try {
stream.close();
} catch(IOException e) { }
}
Still you're understand, Kindly go through this link.
Eclipse exported Runnable JAR not showing images

Because the image is not separate file but packed inside the .jar.
Use the code to create the image from stream
InputStream is=Launcher.class.getResourceAsStream("/1.png");
Image img=ImageIO.read(is);

try to use this to get image
InputStream input = getClass().getResourceAsStream("/your image path in jar");

Two Simple steps:
1 - Add the folder ( where the image is ) to Build Path;
2 - Use this:
InputStream url = this.getClass().getResourceAsStream("/load04.gif");
myImageView.setImage(new Image(url));