How to set relatively address to write a file in JAVA?

Question

When I write a string to a file, Java writes the file in project's root directory.

I want to write in a subdirectory. For example : project_root/my_subdir.

It is possible to write a file to an absolute path? It would be much better if my program was able to work on another system.

Answer 1

You can define the file as

new File("project_root/my_subdir", newFileToCreate);

or perhaps

new File("project_root" + File.separator + "my_subdir", newFileToCreate);

to keep this OS independent

or you can use file to as the first parameter

new File(new File("project_root" + File.separator + "my_subdir"), newFileToCreate);