Para configurar APN num aparelho de GPS Tracker na rede MEO usar o seguinte comando
pw,123456,apn,mmsc.tmn.pt,tmn,tmnnet,26806#
Antes de enviar o comando acima assegurar que o cartão SIM não pede código quando colocado no aparelho, retirar código usando um telemóvel/smartphone.
public class QueueDemo {
public static void main(String args[]) {
Queue months = new LinkedList<>();
// Example 1 - Adding objects into Queue
System.out.println("Queue : " + months);
months.add("JAN");
months.add("FEB");
months.add("MAR");
months.add("APR");
months.add("MAY");
months.add("JUN");
months.add("JUL");
months.add("AUG");
months.add("SEP");
months.add("OCT");
months.add("NOV");
months.add("DEC");
System.out.println("Queue after initialization : " + months);
// Example 2 - Checking if an Object is in Queue or not
boolean hasMay = months.contains("MAY");
System.out.println("Does Queue has MAY in it? " + hasMay);
// Example 3 - Retrieving value from head of Queue
String head = months.peek();
System.out.println("Head of the Queue contains : " + head);
// Example 4 - Removing objects from head of the Queue
String oldHead = months.poll();
String newHead = months.peek();
System.out.println("old head : " + oldHead);
System.out.println("new head : " + newHead);
// Example 5 - Another way to remove head objects from Queue
months.remove();
System.out.println("now head of Queue is: " + months.peek());
}
}
From Java7 that we must use FileInputStream and FileOuputStream as described below
public void writeToFile(String fileName, byte[] content) throws IOException {
try (OutputStream os = Files.newOutputStream(Paths.get(fileName))) {
os.write(content);
}
}
public byte[] readFromFile(String fileName) throws IOException {
byte[] buf = new byte[8192];
try (InputStream is = Files.newInputStream(Paths.get(fileName))) {
int len = is.read(buf);
if (len < buf.length) {
return Arrays.copyOf(buf, len);
}
ByteArrayOutputStream os = new ByteArrayOutputStream(16384);
while (len != -1) {
os.write(buf, 0, len);
len = is.read(buf);
}
return os.toByteArray();
}
}
