Учебное пособие JDBC является хорошей отправной точкой
Фрагмент вступления
The JDBC API is a Java API that can access any kind of tabular data,
especially data stored in a Relational Database.
JDBC helps you to write java applications that manage these three programming
activities:
1. Connect to a data source, like a database
2. Send queries and update statements to the database
3. Retrieve and process the results received from the database in answer to
your query
The following simple code fragment gives a simple example of
these three steps:
Connection con = DriverManager.getConnection
( "jdbc:myDriver:wombat", "myLogin","myPassword");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("SELECT a, b, c FROM Table1");
while (rs.next()) {
int x = rs.getInt("a");
String s = rs.getString("b");
float f = rs.getFloat("c");
}
This short code fragment instantiates a DriverManager object to
connect to a database driver and log into the database, instantiates a
Statement object that carries your SQL language query to the database;
instantiates a ResultSet object that retrieves the results of your query,
and executes a simple while loop, which retrieves and displays those
results. It's that simple.
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