我有一个PostgreSQL函数，可以将这些值(varchar、varchar、real、varchar)插入到表中，但我必须在javafx应用程序上执行它

CREATE OR REPLACE FUNCTION insert_values(varchar, varchar, real, varchar) RETURNS void AS $$
BEGIN
    INSERT INTO your_table(column1, column2, column3, column4)
    VALUES ($1, $2, $3, $4);
END;
$$ LANGUAGE plpgsql;

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

public class Main {
    public static void main(String[] args) {
        String url = "jdbc:postgresql://your_database_host:your_database_port/your_database_name";
        String user = "your_username";
        String password = "your_password";

        try (Connection conn = DriverManager.getConnection(url, user, password)) {
            String sql = "SELECT insert_values(?, ?, ?, ?)";
            PreparedStatement statement = conn.prepareStatement(sql);
            statement.setString(1, "value1");
            statement.setString(2, "value2");
            statement.setFloat(3, 3.14f);
            statement.setString(4, "value4");
            statement.execute();
            System.out.println("Function executed successfully.");
        } catch (SQLException e) {
            System.out.println("Function execution failed. Error: " + e.getMessage());
        }
    }
}