如何使用Kotlin处理Postgres时间戳？

import java.sql.Connection
import java.sql.DriverManager
import java.sql.Timestamp

val url = "jdbc:postgresql://localhost:5432/mydatabase"
val username = "myusername"
val password = "mypassword"

val connection: Connection = DriverManager.getConnection(url, username, password)

val sql = "INSERT INTO mytable (timestamp_column) VALUES (?)"
val statement = connection.prepareStatement(sql)

val timestamp = Timestamp(System.currentTimeMillis())
statement.setTimestamp(1, timestamp)

statement.executeUpdate()

val sql = "SELECT * FROM mytable"
val statement = connection.createStatement()
val resultSet = statement.executeQuery(sql)

while (resultSet.next()) {
    val timestamp = resultSet.getTimestamp("timestamp_column")
    // 处理时间戳数据
}

resultSet.close()
statement.close()