![nashi-nashi](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2655859%2F2700c13c99270275e5512877022c7d65ba1ec9b2%2Fx_large.png%3F1651761475?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=f0d25877fed3bec9d4defd5e15e5fce5)
![](https://s3-ap-northeast-1.amazonaws.com/qiita-organization-image/b38622b355eec23dbfd757fbae5a3d1139fd3b40/original.jpg?1664930421)
![](https://s3-ap-northeast-1.amazonaws.com/qiita-organization-image/5a175db3cca5dd93b1c72c65fe389472501664f7/original.jpg?1635772725)
株式会社トラント
「ITでサプライズ!」 それが私たちのミッションです。 ワクワクしながら自分らしく働ける・やりがいを持ってスキルアップできる環境がここにあります。誰かと共に努力する、助け合い、達成する喜びを分かち合う。それがトラントのチーム力。あなたも私たちと共に成長しませんか。
- Posts47posts
- Likes441likes
- Followers7followers
![nashi-nashi](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2655859%2F2700c13c99270275e5512877022c7d65ba1ec9b2%2Fx_large.png%3F1651761475?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=f0d25877fed3bec9d4defd5e15e5fce5)
![nashi-nashi](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2655859%2F2700c13c99270275e5512877022c7d65ba1ec9b2%2Fx_large.png%3F1651761475?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=f0d25877fed3bec9d4defd5e15e5fce5)
MapのnullチェックにはMapUtils.isEmpty()を使おう!
![nashi-nashi](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2655859%2F2700c13c99270275e5512877022c7d65ba1ec9b2%2Fx_large.png%3F1651761475?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=f0d25877fed3bec9d4defd5e15e5fce5)
Stringのnull、空文字チェックにはStringUtilsのメソッドを使おう!
![fukakou](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2613554%2F08651821d198d1a9ad7d03a4f5ab4819bba65020%2Flarge.png%3F1653976781?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=1562c9c6d12c06105b7562a428bc2d5f)
PostgreSQL 基本コマンド
![fukakou](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2613554%2F08651821d198d1a9ad7d03a4f5ab4819bba65020%2Flarge.png%3F1653976781?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=1562c9c6d12c06105b7562a428bc2d5f)
PostgreSQL 使用例
Mendixとエンジニアのお話〜1章:Mendixとの出会い編〜
![nashi-nashi](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2655859%2F2700c13c99270275e5512877022c7d65ba1ec9b2%2Fx_large.png%3F1651761475?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=f0d25877fed3bec9d4defd5e15e5fce5)
ListのnullチェックにはCollectionUtils.isEmpty()を使おう!
LinuCレベル1受験記(2023年9月)
Excel VBAって何?
【受験体験記②】テクニカルコミュニケーション技術検定試験(TC技術検定)「3級 テクニカルライティング試験」
【2023年6月】未経験転職者の基本情報技術者試験受験記
【受験体験記①】テクニカルコミュニケーション技術検定試験(TC技術検定)「3級 テクニカルライティング試験」
![fukakou](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2613554%2F08651821d198d1a9ad7d03a4f5ab4819bba65020%2Flarge.png%3F1653976781?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=1562c9c6d12c06105b7562a428bc2d5f)
Kotlin Nullsafetyについて
![fukakou](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2613554%2F08651821d198d1a9ad7d03a4f5ab4819bba65020%2Flarge.png%3F1653976781?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=1562c9c6d12c06105b7562a428bc2d5f)
Kotlinの特徴
![fukakou](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2613554%2F08651821d198d1a9ad7d03a4f5ab4819bba65020%2Flarge.png%3F1653976781?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=1562c9c6d12c06105b7562a428bc2d5f)
Gitとは
OSS-DB 学習メモその4【組み込み関数一覧と演算子一覧】
OSS-DB 学習メモその3【標準付属ツールについて】
OSS-DB Silver 学習メモその2【initdbについて】
![fukakou](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2613554%2F08651821d198d1a9ad7d03a4f5ab4819bba65020%2Flarge.png%3F1653976781?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=1562c9c6d12c06105b7562a428bc2d5f)
報連相で気を付けること
![fukakou](https://qiita-user-profile-images.imgix.net/https%3A%2F%2Fs3-ap-northeast-1.amazonaws.com%2Fqiita-image-store%2F0%2F2613554%2F08651821d198d1a9ad7d03a4f5ab4819bba65020%2Flarge.png%3F1653976781?ixlib=rb-4.0.0&auto=compress%2Cformat&lossless=0&w=128&s=1562c9c6d12c06105b7562a428bc2d5f)