file reader

[velvet harness]

art.txt (The system cannot find the file specified)

[livid salmon]

<@&987246964494204979> please have a look, thanks.

[livid salmon]

While you are waiting for getting help, here are some tips to improve your experience:

Code is much easier to read if posted with syntax highlighting and proper formatting.

If nobody is calling back, that usually means that your question was not well asked and hence nobody feels confident enough answering. Try to use your time to elaborate, provide details, context, more code, examples and maybe some screenshots. With enough info, someone knows the answer for sure.

Don't forget to close your thread using the command </help-thread close:1027500463647621170> when your question has been answered, thanks.

[velvet harness]

this is my only file

[tired parcel]

same as before, not src but the directory above

[velvet harness]

last time it was here

[tired parcel]

yes

[tired parcel]

the file needs to be above src

[velvet harness]

you mean out the folder?

[tired parcel]

yes

it's literraly the same problem as before

with poem.txt

it should be outside src

that's all

[velvet harness]

now i have it only in out but it still won t work

[velvet harness]

so what is the problem with this cuz it is outside src

[proper hollow]

it needs to be above source

now u got it in out\something

[velvet harness]

placed it here now like the last time

[tired parcel]

yes

[proper hollow]

try now

[velvet harness]

but could you guys explain why it won t work cuz i still think it is kinda annoying 😅

[lone frost]

what won't work?

[tired parcel]

wdym, it work here no ?

[proper hollow]

your 0 location for file is in untitiled

[tired parcel]

Also please use a try-with-resources

[lone frost]

and NIO

[velvet harness]

wdym by that tought you meant my question had to be more detailed

[proper hollow]

and incase its a school traject, keep those names in mind but follow the traject

[velvet harness]

whats that?

[livid salmon]

File IO in Java should be done preferably with NIO (Java 7+), revolving around the classes Files and Path; and not with the old interface File, BufferedReader, FileReader and similar.

NIO is simple to use. The path to a file is represented using the Path class:

Path path = Path.of("myFile.txt");

All file operations can be found in the Files class:

// Reading
List<String> allLines = Files.readAllLines(path);
// or as a single string
String content = Files.readString(path);
// or with a stream
try (Stream<String> stream = Files.lines(path)) {
  stream.forEach(System.out::println);
}

// Writing
Files.write(path, lines);
// or as a single string
Files.writeString(path, "hello world");
// or with extra options
Files.writeString(path, "hello world",
  StandardOpenOption.WRITE,
  StandardOpenOption.CREATE,
  StandardOpenOption.APPEND);

If you need more control over the process, you can fallback to the old interface, but prefer using the bridge methods from NIO (Files.newBufferedReader, Files.newInputStream, path.toFile() and similar) to benefit from advantages such as correct encoding and better error detection.

Here is a simple example of how to read a file line-wise with the old interface

try (BufferedReader br = Files.newBufferedReader(path)) {
  String line;
  while ((line = br.readLine()) != null) {
    System.out.println(line);
  }
}

it is way more verbose than NIO but it gives more control.

You must not forget to close file handles, even in all exceptional cases. Closing a handle manually is very hard, which is why you should always use try-with-resources for this to let Java automatically close the handle for you:

try (SomeResource resource = ...) {
  ...
} // Automatically closed here, even in exceptional cases

Quinteger • used /tag id: nio · May 10, 2023, 8:08 PM

[velvet harness]

just learning no schoolproject

[proper hollow]

then use the suggestions, your doing old style

[tired parcel]

try(FileReader reader = new FileReader("art.txt")) {
  ...
}

[velvet harness]

so just 1 more )😅

[velvet harness]

ig so just watching some yt

[proper hollow]

use it the way alathreon wrote

your using try catch, that's not the same

[velvet harness]

but were does the ) get compensated?

[lone frost]

compare the placement of the reader declaration

in both cases

[proper hollow]

try(FileReader reader = new FileReader("art.txt")) < = even brackets 😉

[velvet harness]

dunno how to close it ^| that way

[lone frost]

there is no need to add the <=

and you don't need to close it when using try-with-resources

[velvet harness]

you mean reader.close is useless in this case=

?

[proper hollow]

scroll up a bit and read the text the bot pasted

[velvet harness]

sorry just kinda confused and wanna skip as close to the tutorial as i can

[proper hollow]

that's one way of defining where the file is located

[velvet harness]

yeah but that is alr ok in my file right?

but if i wanna creat a txt file in intellij i have to be carefull that i don t place it in a folder untitled

[proper hollow]

u can always place an absolute location , for learning purposes

(just make sure u use a forward slash instead of a backward slash)

[oblique forge]

You just have to make sure the path you use matches where the file is located

You can have the file be in whatever folder you want. You just have to make sure the path you use in code matches the path of where the file is

[velvet harness]

\ this also fine why does it matter?

\

\

[oblique forge]

What do you mean?

[velvet harness]

double lol

[oblique forge]

Use a code block

\ is the escape character in Discord (and Java too, and many other programs & languages)

[oblique forge]

You could use / instead

[velvet harness]

like this also fine you can do both ways

[velvet harness]

why?

[oblique forge]

It doesn't matter which you use

Java requires 2 back-slashes because a back-slash is the escape character

[velvet harness]

used \ anyway from python 😅

but tbh i still don t understand why it can t find it in

src i mean

[proper hollow]

cause src is not the base folder

your start folder is the folder above src

basicly your root

if u tell it to use /src/file.something it will use that

if u use file.something without path, it will look in your project folder

[oblique forge]

The "working directory" of a project is the project folder itself. Relative paths start at the working directory

[proper hollow]

yes

[velvet harness]

thx for response went too bed 😅 gonna close this thread