How to use a ~ (relative directory) in my java class?

Question

Hi, I create a temporary file on the server, that someone uploads. While I was testing, It was fine to use the complete home directory path in my machine. But now that I have to deploy it to a server, I tried using a ~, but I get a

java.io.FileNotFoundException: ~/test/csvFile.csv (No such file or directory)

how do I use something analogous to a ~ ie short for the home directory in *nix. I am using the java.io.File package.

Thanks.

Answer 1

System.getProperty("user.home") ; //will return the path to user home directory.

If i understood it correctly you are looking for how to get user dir path

Answer 2

~ is deciphered by Unix shell, not by your program. To get the same effect, get the value of "HOME" environmental variable

Answer 3

If you really want a temporary file, you should stop caring about which directory this ends up in (usually) and instead use

File tempFile = File.createTempFile("csvFile", ".csv");

Answer 4

The user.home system property points to the current user's home directory.

However, you may want to consider File.createTempFile() instead for temporary files.