20. Java 8+

1. Review the presentation Java 8+

Tasks

1. Review the package jtm.activity20
2. Create an entry RandomPerson
3. Add new methods to the PersonMatcher interface:
   1. Method Stream<RandomPerson> getPersonStream()

   2. default method Stream<RandomPerson> getMatchedPersonStream() with parameters:

      • Stream<RandomPerson> persons,
      • boolean isFemale,
      • int ageFrom,
      • int ageTo,
      • float weightFrom,
      • float weightTo

      This method should return a Stream with the passed persons filtered according to the passed gender, age range, and weight range (including). Tip: You can use stream filter model.

   3. static method List<RandomPerson> getPersonList(Stream<RandomPerson> persons)
   4. static method PersonMatcher getPersonManager()
   5. Implement the default and static method in the PersonMatcher interface.
4. Create a class PersonMatcherImpl that implements the PersonMatcher interface and implement its methods:
   1. public constructor PersonMatcherImpl()
   2. public void addPerson(RandomPerson person)
   3. public List<RandomPerson> getPersonList()

   4. public Stream<RandomPerson> getPersonStream()
      Tip: You can use Stream.Builder.

5. Verify that the unit tests for the jtm.activity20 package pass.