Unexpected FileNotFoundException on FileWriter

Question

I am attempting to create a simple text file that I will be writing to.

I receive the following error:

/Library/Java/Home/bin/java -Didea.launcher.port=7         


        

Answer 1

public static String filePath = "~//Desktop//";

This will not work. In fact I am surprised that you say that it works on Windows.

You probably meant for the '~' to mean your home directory...

Except that it means this for the shell. Java has no idea what that is. What it will effectively try to do here is find a directory named '~' and an entry named Desktop in it.

Use System.getProperty("user.home") to know what your home diretory it.

And this is 2015, so don't use File. use java.nio.file instead:

final Path path = Paths.get(System.getProperty("user.home"),
    "Desktop", "yourFileName");

try (
    final BufferedWriter writer = Files.newBufferedWriter(path,
        StandardCharsets.UTF_8, StandardOpenOption.APPEND);
) {
    // use the writer here
}

Answer 2

You can't use a tilde ~ in your path. If you want the user's home directory, you can get it from System.getProperty("user.home")