Does Java SE 8 have Pairs or Tuples?

Question

I am playing around with lazy functional operations in Java SE 8, and I want to map an index i to a pair / tuple (i, value[i]), then <

Answer 1

Since you only care about the indexes, you don't need to map to tuples at all. Why not just write a filter that uses the looks up elements in your array?

     int[] value =  ...


IntStream.range(0, value.length)
            .filter(i -> value[i] > 30)  //or whatever filter you want
            .forEach(i -> System.out.println(i));