java oracle数据库连接代码

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class OracleJDBCConnection {
    public static void main(String[] args) {
        Connection connection = null;
        try {
            // 加载Oracle JDBC驱动程序
            Class.forName("oracle.jdbc.driver.OracleDriver");
            
            // 设置数据库连接URL、用户名和密码
            String url = "jdbc:oracle:thin:@localhost:1521:orcl";
            String username = "your_username";
            String password = "your_password";
            
            // 建立数据库连接
            connection = DriverManager.getConnection(url, username, password);
            
            // 连接成功后的操作
            System.out.println("Connected to Oracle Database!");
            
        } catch (ClassNotFoundException e) {
            System.err.println("Oracle JDBC Driver not found!");
            e.printStackTrace();
        } catch (SQLException e) {
            System.err.println("Connection to Oracle Database failed!");
            e.printStackTrace();
        } finally {
            // 关闭数据库连接
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}