Where does java look for files?

Question

I'm trying to read a file in java:

Public class Test{

public static void main (String [] args) throws IOException {

BufferedReader f = new BufferedReader(new FileReader("test.in"));

//...

PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("test.out")));

//...                                 

}

}

1) Where should the location of "test.in" be? (src? bin? ???)

2) Where will "test.out" be located?

Answer 1

A relative path'ed file is looked for in the directory specified by System.getProperty("user.dir")

Answer 2

The answer is the working folder, which means the folder in which you executed the "java ..." command. This is the project folder in eclipse projects for instance.