{"id":112230,"date":"2024-03-22T19:41:22","date_gmt":"2024-03-22T10:41:22","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ae%e3%82%ab%e3%83%a9%e3%83%a0%e6%83%85%e5%a0%b1%e3%82%92%e5%8f%96%e5%be%97%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-05T09:17:35","modified_gmt":"2024-04-05T00:17:35","slug":"java%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ae%e3%82%ab%e3%83%a9%e3%83%a0%e6%83%85%e5%a0%b1%e3%82%92%e5%8f%96%e5%be%97%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ae%e3%82%ab%e3%83%a9%e3%83%a0%e6%83%85%e5%a0%b1%e3%82%92%e5%8f%96%e5%be%97%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ab\u30e9\u30e0\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

Java\u3067\u306f\u3001JDBC\uff08Java Database Connectivity\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u8868\u5185\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002
\n“`java
\nimport java.sql.Connection;
\nimport java.sql.DriverManager;
\nimport java.sql.ResultSet;
\nimport java.sql.SQLException;
\nimport java.sql.Statement;<\/p>\n

public class DatabaseExample {<\/p>\n

public static void main(String[] args) {
\ntry {
\n\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a
\nConnection connection = DriverManager.getConnection(“jdbc:mysql:\/\/localhost:3306\/mydatabase”, “username”, “password”);<\/p>\n

\/\/ Statement\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210
\nStatement statement = connection.createStatement();<\/p>\n

\/\/ SQL\u30af\u30a8\u30ea\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5b9f\u884c
\nResultSet resultSet = statement.executeQuery(“SELECT * FROM mytable”);<\/p>\n

\/\/ \u7d50\u679c\u30bb\u30c3\u30c8\u3092\u53cd\u5fa9\u51e6\u7406\u3057\u3066\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5024\u3092\u53d6\u5f97
\nwhile (resultSet.next()) {
\nint id = resultSet.getInt(“id”);
\nString name = resultSet.getString(“name”);
\nint age = resultSet.getInt(“age”);
\nSystem.out.println(“ID: ” + id + “, \u540d\u524d: ” + name + “, \u5e74\u9f62: ” + age);
\n}<\/p>\n

\/\/ \u63a5\u7d9a\u3092\u9589\u3058\u308b
\nresultSet.close();
\nstatement.close();
\nconnection.close();
\n} catch (SQLException e) {
\ne.printStackTrace();
\n}
\n}
\n}
\n“`<\/p>\n

\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001\u6700\u521d\u306b`DriverManager.getConnection()`\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002\u6b21\u306b\u3001`connection.createStatement()`\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066SQL\u30af\u30a8\u30ea\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b`Statement`\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u6b21\u306b\u3001`statement.executeQuery()`\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057\u3001\u7d50\u679c\u3092`ResultSet`\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001`ResultSet`\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e`getInt()`\u3001`getString()`\u306a\u3069\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5bfe\u5fdc\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001`close()`\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u7d50\u679c\u30bb\u30c3\u30c8\u3001Statement\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u304a\u3088\u3073\u63a5\u7d9a\u3092\u9589\u3058\u307e\u3059\u3002<\/p>\n

\u4e0a\u8a18\u306e\u4f8b\u3067\u306fMySQL\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c9\u30e9\u30a4\u30d0\uff08JDBC\u30c9\u30e9\u30a4\u30d0\uff09\u3092\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001URL\u3001\u30e6\u30fc\u30b6\u30fc\u540d\u3001\u304a\u3088\u3073\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u60c5\u5831\u306b\u7f6e\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Java\u3067\u306f\u3001JDBC\uff08Java Database Connectivity\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u8868\u5185\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-112230","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ab\u30e9\u30e0\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ab\u30e9\u30e0\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ab\u30e9\u30e0\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Java\u3067\u306f\u3001JDBC\uff08Java Database Connectivity\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u8868\u5185\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ab\u30e9\u30e0\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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