See if file is empty [duplicate]

Answer 1

File file = new File("file_path");
System.out.println(file.length());

Answer 2

File file = new File(path);

boolean empty = file.exists() && file.length() == 0;

I want to stress that if we want to check if the file is empty, then we have to consider that it exists.

Answer 3

According to J2RE javadocs: http://docs.oracle.com/javase/7/docs/api/java/io/File.html#length()

public long length()
    Returns the length of the file denoted by this abstract pathname. The return value is     unspecified if this pathname denotes a directory.

So new File("path to your file").length() > 0 should do the trick. Sorry for bd previous answer. :(

Answer 4

BufferedReader br = new BufferedReader(new FileReader("your_location"));     
if (br.readLine()) == null ) {
    System.out.println("No errors, and file empty");
}

see Most efficient way to check if a file is empty in Java on Windows

Answer 5

File file = new File(path);

boolean empty = !file.exists() || file.length() == 0;

which can shortened to:

boolean empty = file.length() == 0;

since according to documentation the method returns

The length, in bytes, of the file denoted by this abstract pathname, or 0L if the file does not exist

Answer 6

        File file = new File("path.txt");
        if (file.exists()) {
            FileReader fr = new FileReader(file);
            if (fr.read() == -1) {
                System.out.println("EMPTY");
            } else {
                System.out.println("NOT EMPTY");
            }
        } else {
            System.out.println("DOES NOT EXISTS");
        }