what is T in java code example

Example: java \t

for (int k = 0; k < 7; k++){
        System.out.println("Vak/project:\t" + vakNamen[x] + "\t\t"
        + "Cijfer: " + vakCijfers[x] + "\t" + "Behaalde punten: "
        + vakPunten[x]);
        x++;
    }