如何将java.util.List转换为Scala列表 [英] How to convert a java.util.List to a Scala list

问题描述

我有此Scala方法，出现以下错误.无法转换为Scala列表.

I have this Scala method with below error. Cannot convert into a Scala list.

 def findAllQuestion():List[Question]={
   questionDao.getAllQuestions()
 } 

类型不匹配；找到:java.util.List[com.aitrich.learnware.model.domain.entity.Question]必需: scala.collection.immutable.List[com.aitrich.learnware.model.domain.entity.Question]

type mismatch; found : java.util.List[com.aitrich.learnware.model.domain.entity.Question] required: scala.collection.immutable.List[com.aitrich.learnware.model.domain.entity.Question]

推荐答案

import scala.collection.JavaConversions._

将为您做隐式转换；例如:

will do implicit conversion for you; e.g.:

var list = new java.util.ArrayList[Int](1,2,3)
list.foreach{println}

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