\n
import java.sql.Connection;\r\nimport java.sql.DriverManager;\r\nimport java.sql.ResultSet;\r\nimport java.sql.Statement;\r\n\r\npublic class PGHelloWorld {\r\n\r\n public static void main(String[] args) {\r\n try (Connection con = DriverManager.getConnection(\"jdbc:postgresql:\/\/localhost:5432\/testdb\", \"username\", \"password\");\r\n Statement st = con.createStatement();\r\n ResultSet rs = st.executeQuery(\"select * from test1\")) {\r\n if (rs.next()) {\r\n System.out.println(rs.getString(1));\r\n }\r\n } catch (Exception ex) {\r\n ex.printStackTrace();\r\n }\r\n }\r\n}<\/pre>\n<\/div>\n\u5b9f\u884c\u7d50\u679c<\/p>\n
\n
Hello World<\/pre>\n<\/div>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
JDK 17 import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.S… \u7d9a\u304d\u3092\u8aad\u3080 jdbc:postgresql\u3067Hello World<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3,9],"tags":[],"_links":{"self":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts\/138"}],"collection":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=138"}],"version-history":[{"count":2,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts\/138\/revisions"}],"predecessor-version":[{"id":147,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=\/wp\/v2\/posts\/138\/revisions\/147"}],"wp:attachment":[{"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kd2.jp\/memo3\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}