从Oracle游标中获取第一个值-从Java代码中调用游标

import java.sql.*;

public class CursorExample {
    public static void main(String[] args) {
        String url = "jdbc:oracle:thin:@localhost:1521:orcl";
        String user = "username";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, user, password)) {
            String sql = "{call get_data_cursor()}";
            try (CallableStatement stmt = conn.prepareCall(sql)) {
                try (ResultSet rs = stmt.executeQuery()) {
                    if (rs.next()) {
                        // 获取第一个值
                        int firstValue = rs.getInt(1);
                        System.out.println("First value: " + firstValue);
                    }
                }
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}