Perform multiple unrelated operations on elements of a single stream in Java

Question

How can I perform multiple unrelated operations on elements of a single stream?

Say I have a List composed from a text. Each string in the

Answer 1

If you want to have 1 stream through a list, you need a way to manage 2 different states, you can do this by implementing Consumer to new class.

    class WordsInStr implements Consumer {

      ArrayList list = new ArrayList<>();

      @Override
      public void accept(String s) {
        Stream.of(s).filter(t -> t.contains("of")) //probably would be faster without stream here
            .map(t -> t.split(" ").length)
            .forEach(list::add);
      }
    }

    class LinePortionAfterFor implements Consumer {

      ArrayList list = new ArrayList<>();

      @Override
      public void accept(String s) {
        Stream.of(s) //probably would be faster without stream here
            .filter(t -> t.contains("for"))
            .map(t -> t.substring(t.indexOf("for")))
            .forEach(list::add);
      }
    }

    WordsInStr w = new WordsInStr();
    LinePortionAfterFor l = new LinePortionAfterFor();

    strs.stream()//stream not needed here
        .forEach(w.andThen(l));
    System.out.println(w.list);
    System.out.println(l.list);