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Embedding Database Configuration Directly in Java Code

Notes May 1 43

Embedding Database Configuration Directly in Java Code

Step Description
1 Include database driver
2 Define connection parameters
3 Establish connection
4 Create statement object
5 Execute SQL command
6 Process query results
7 Release resources

Include Database Driver

Ensure the appropriate JDBC driver is availible in the project's classpath. For MySQL, this typically involves adding the MySQL Connector/J library.

Define Connection Parameters

String dbUrl = "jdbc:mysql://localhost:3306/sample_db";
String user = "admin";
String pass = "secret";

Establish Connection

Connection connection = DriverManager.getConnection(dbUrl, user, pass);

Create Statement Object

Statement statement = connection.createStatement();

Execute SQL Command

String query = "SELECT * FROM employees";
ResultSet result = statement.executeQuery(query);

Process Query Results

while (result.next()) {
    int employeeId = result.getInt("id");
    String employeeName = result.getString("name");
    // Additional processing
}

Release Resources

result.close();
statement.close();
connection.close();
Tags: Java

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