Thread: How to check if a user input is a char or a int

so yeah i got this problem. i have to do a program and the first part of it is user input.
i have 5 choices. 4 are an int and one is a char.
heres the code i got so far.

int reponse;
System.out.println("1-Plus longue repetition de nucleotide");
System.out.println("2-Liste des sous-sequences communes");
System.out.println("3-Plus longue sous-sequence communes");
System.out.println("4-Alignement optimal");
System.out.println("q-Quitter");
reponse = Keyboard.readInt();
System.out.println(reponse);
if (reponse == 1)
{
}
if (reponse == 2)
{
}
if (reponse == 3)
{
}
if (reponse == 4)
{
}

oh and btw the keyboard class is a class my teach gave me for my class cause we are complete beginners its basically used for user input.
so as you can see i did an if for all the int reponse but what about if the user enters q? how do i check it?
sorry if its in french but the code is still in english right.

looking forward to your help

Blackbird94

dosent seem like java is giving any value to "reponse" when i enter q. I tried printing it out it just gives 0