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2. Javaの環境構築

導入する環境は用途に応じて以下の2種類に分かれます。

JRE(Java Runtime Environment): Javaプログラムを実行する際に必要になります。

JDK(Java Development Kit): Javaプログラムを開発、実行する際に必要になります。JDKの中にJREは含まれています。

つまり、

Javaプログラムの実行のみしたい。→ JREの導入

Javaプログラムの開発をしたい。→ JDKの導入

※統合開発環境によってはJDKを含むものもあります。

 

統合開発環境の導入方法

eclipse の導入はこちらの記事を参照。

 

JREもしくはJDKの単体での導入方法

以下の公式サイトにアクセスしてダウンロードおよびインストールをしてください。

公式サイトはこちら

 

Cent OS サーバーへのJava導入

以下のコマンドを実行します。

yum install java-1.8.0-openjdk

 

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同階層のページ
  1. プラットホーム
  2. 環境構築
  3. 文法
  4. API
  5. Servlet(サーブレット)
  6. JSP
  7. Applet(アプレット)
  8. デザインパターン
  9. フレームワーク
  10. ライブラリ
  11. Androidアプリケーション
  12. Project Jigsaw
  13. エラー一覧
  14. 日付の加算、減算
  15. 文字列の数字チェック
  16. 改行コードの削除
  17. 先頭と末端の文字の削除
  18. warファイルの中身を確認する方法
  19. nullもしくは空文字の判定
  20. beanの中身を確認する方法
  21. org.apache.log4j.Loggerのログ出力でprintStackTrace()のエラー内容を出力する方法
  22. Javaのバージョン確認方法

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