Bootcamp Java Developer Day #11

Day 11:

Finished one course and solved 5 challenges level easy.

8) Finished: Implementing Collections and Streams with Java

Today’s topic were:

• Optional
  java.util.Optional

• Streams
  stream().count());
  stream().max(Comparator.comparingInt(String::length))
  stream().filter()
  collect(Collectors.toList())
  stream().map()
  stream().limit(3).collect(Collectors.toList())
  stream().peek()
  collect(Collectors.joining(“, “))
  collect(Collectors.toSet())
  collect(Collectors.groupingBy())

9) Arithmetic Fundaments in Java

This part was composed by five challenges about arithmetic operations. Level easy.

原文链接：Bootcamp Java Developer Day #11