# Reference - https://dwaejinho.tistory.com/entry/Java-Lambda-Stream-%EB%8F%84%EC%9E%85-%EB%B0%B0%EA%B2%BD%EA%B3%BC-%EC%9B%90%EB%A6%AC-%ED%8C%8C%ED%95%B4%EC%B9%98%EA%B8%B0#1.%20Lambda%20Expression-1
