Writing to a file, where is the output file?

Question

        FileWriter outFile = null;
        try {
            outFile = new FileWriter("member.txt");
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
out.println("test");

Running this command, where is member.txt located? I am using Windows Vista. UAC is enabled, so when I run it, I don’t think it writes to a txt file. The txt file was created, but it is empty.

Answer 1

Relative paths in Java IO relate to the current working directory. In Eclipse, this is usually the root of the project. You also write outinstead outFile. Here the younger rewrite:

    File file = new File("member.txt");
    FileWriter writer = null;
    try {
        writer = new FileWriter(file);
        writer.write("test");
    } catch (IOException e) {
        e.printStackTrace(); // I'd rather declare method with throws IOException and omit this catch.
    } finally {
        if (writer != null) try { writer.close(); } catch (IOException ignore) {}
    }
    System.out.printf("File is located at %s%n", file.getAbsolutePath());

Closing is mandatory because it flushes the recorded data to a file and releases the file lock.

, Java IO. , classpath. ClassLoader#getResource(), getResourceAsStream() ..

Answer 2

( ), .

Answer 3

Java, , " → ..."

"". " ". , Java-.

"member.txt" , , " ".

Answer 4

IDE. , .java. , , Eclipse Netbeans, .

Answer 5

Eclipse ( , ). Project Explorer, ( F5).

" " "".