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I want to return a tuple of double data types. I am unable to create Pair . I have read the documentation but unable to make it. I am doing as

private Pair myNums(double F, double S) {
        Pair<F f, S s> p = Pair.create(F, S);
        return p;
But it is saying 
  
Unknown class F
                How can I retrieve these doubles? Something like this double F  = mynums(), double second = mynums().....
– Humty
                Oct 26, 2016 at 10:30
                no. You are returning a Pair, so you should assign it to a Pair object. Pair<Double, Double> x = mynums();. You should learn java btw
– Blackbelt
                Oct 26, 2016 at 10:33
                How to open the pair? How to save both nums in different double variables where the function calls?
– Humty
                Oct 26, 2016 at 10:34
Try private <T, S> Pair<T, S> myNums(...) {}. in Java, you must specify the generics before the return type of the method. But you cannot specify double as your argument types. Ideally, do not specify types in your arguments as this will make your method truly generic.
private <T, S> Pair<T, S> myNums(T t, S s) {
    // do work to create the Pair and return
Just remember, if you're using generics, then use the power of generics in Java, don't then specify types like double, int or String. It really defeats the very essence and reason why generics are used and their intention.
private Pair myNums() {
    Pair<String, Integer> p = Pair.create("Prashant M", 1000);
    return p;
        
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