From One File to Another Program

import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
class ListOneUsername {
public static void main(String args[])
throws FileNotFoundException {
Scanner diskScanner =
new Scanner(new File(“email.txt”));
PrintStream diskWriter =
new PrintStream(“usernames.txt”);
char symbol;
symbol = diskScanner.findInLine(“.”).charAt(0);
while (symbol != ‘@’) {
diskWriter.print(symbol);
symbol = diskScanner.findInLine(“.”).charAt(0);
}
diskWriter.println();
}
}