InputStream in = getClass().getResourceAsStream("/com/example/res/textfile.txt");
OutputStream out = new FileOutputStream(externalPath);
byte[] buffer = new byte[1024];
int read = 0;
while (-1 != (read = in.read(buffer))) {
out.write(buffer, 0, read);
read = in.read(buffer);
System.out.println("entrou");
}
out.close();