Simple Java IO Questions

In my class, we are learning about Java IO right now, using Eclipse. I am currently trying to complete a project that uses Java IO extensively. I am having trouble with the syntax. Help would be appreciated :D

Here is my attempt at a very simple program that creates a file, and writes inside it "Hello World" :

Code:

---

import java.io.*;
import java.util.Scanner;

public class CreateFile
{
    public static void main(String[] args)
    {
                    try{
                            Scanner in = new Scanner(System.in);
                            System.out.print("Enter a filename: ");
                            String filename = in.nextLine();
                            FileWriter outFile = new FileWriter(filename);
                   
                                    outFile.write("Hello World!");
                                outFile.close();
                            }       
                    catch(IOException e)
                    {
                            System.out.println("Could not open file.");
                    }
    }
}

---

It seems to work when I run it, but I'm having trouble locating the text file that I create. Where does this file end up?

And more importantly, when I want my program to read from a file, where do I need to put this file on my computer?

If you just input the filename then it will be saved on you class path.

I don't think that it's saved directly on the class path (where the class files are loaded from), and indeed a classpath can contain many directories but rather in the user directory. To the OP, put this in the program above:

Code:

---

System.out.println(System.getProperty("user.dir"));

---

So I have spent way to much time scowering the web on were to find a way to recall .txt files. Here is how I did it.
I first made one class
import java.util.*;
import java.io.*;
public class filetest {

/**
* @param args
*/
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.println("File name: ");
try
{
String filename=input.next();
System.out.println(filename);
System.out.println();
showfile.showFile(filename);
}
catch(FileNotFoundException e)
{
System.out.println(e);
}
catch(IOException e)
{
System.out.println(e);
}
// TODO Auto-generated method stub

}

}

now in order for this class to work you must use a second class which the code is:

import java.io.*;
public class showfile {
public static void showFile(String filename) throws IOException,
FileNotFoundException{
int c;
File input=new File(filename);
FileInputStream in=new FileInputStream(input);
while((c=in.read())!=-1)
{
System.out.print((char)c);
}
in.close();
}
}

once all of this is in place go back to your first class and in order to find your file you must type the directories it is under.

EXAMPLE:
Input Filename:
C:\test.txt
test.txt
hello world

hope that helps!