Java study site summary that you want to read carefully

Java learning site summary

General

Lombock https://blog.y-yuki.net/entry/2016/10/12/003000

Let's write some nice Java code

Effective Java-like https://qiita.com/nishemon/items/b581b3430cc6225098ca

Modern Java Development Guide

https://qiita.com/yoichiwo7/items/17190cb440ab7d253cea

Java8 related

Optinal https://qiita.com/chooyan_eng/items/02f775f591c0312a9faf

Stream API https://qiita.com/takumi-n/items/369dd3fcb9ccb8fcfa44

Method reference

https://qiita.com/kws9/items/d1cfbcb483be87bf25e7

Lambda basics

https://qiita.com/subaru44k/items/c55d9b9fc419f0d09c64

Asynchronous processing (CompletableFuture)

https://qiita.com/subaru44k/items/d98ad79d21abccedb20b#_reference-10bfc3d1ccbdee538552

Java11 Java8→Java11 https://qiita.com/nowokay/items/1ce24079f4daafc73b4a

Design concept

Null object

https://vain0x.github.io/blog/2016-08-18/null-object-patterns/ Value Object https://qiita.com/ikemo/items/8df668b3efd38026a416

Domain driven

[Code using domain language](https://ja.wikisource.org/wiki/%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83 % 9E% E3% 81% 8C% E7% 9F% A5% E3% 82% 8B% E3% 81% B9% E3% 81% 8D97% E3% 81% AE% E3% 81% 93% E3% 81% A8 /% E3% 83% 89% E3% 83% A1% E3% 82% A4% E3% 83% B3% E3% 81% AE% E8% A8% 80% E8% 91% 89% E3% 82% 92% E4% BD% BF% E3% 81% A3% E3% 81% 9F% E3% 82% B3% E3% 83% BC% E3% 83% 89)

Immutable Java, Null Safe

https://qiita.com/newta/items/ccf9116909dc61ed7123

tell don't ask https://tech.quartetcom.co.jp/2019/09/26/oop-training-tech/ https://scrapbox.io/vitocchi/Tell_Don't_Ask