写一段连接数据库的java代码
时间: 2024-05-08 12:19:23 浏览: 6
好的,以下是一段连接数据库的Java代码:
```
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DatabaseConnection {
public static void main(String[] args) {
Connection conn = null;
String url = "jdbc:mysql://localhost:3306/your_database_name_here";
String username = "your_database_username_here";
String password = "your_database_password_here";
try {
conn = DriverManager.getConnection(url, username, password);
System.out.println("Connection to database established.");
} catch (SQLException e) {
System.out.println("Error connecting to database: " + e.getMessage());
} finally {
try {
if (conn != null) {
conn.close();
System.out.println("Database connection closed.");
}
} catch (SQLException ex) {
System.out.println("Error closing database connection: " + ex.getMessage());
}
}
}
}
```