![](/img/trans.png)
[英]java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Float
[英]java.lang.ClassCastException: java.lang.String cannot be cast to com.fastdata.persistence.PersistenceService
trait PersistenceService {
def setData(x: Any): Unit
def getData(x:Any) : Any
}
object ConfigurationLoader{
var p_service: PersistenceService = null
val persistence_db = component_props.getProperty("persistence_db")
p_service = (persistence_db+"Service").asInstanceOf[PersistenceService]
}
我如何在運行時進行投射?
我們可以使用如下所示的反射來完成
Class.forName(“完全限定的類名”).newInstance()
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.