多项选择题 public class OuterClass {   private double d1 1.0；   //insert code here   }   You need to insert an inner class declaration at line2. Which two inner class declarations are valid？（）

单项选择题 Youwantaclasstohaveaccesstomembersofanotherclassinthesamepackage.Whichisthemostrestrictiveaccessmodifierthatwillaccomplishthatwillaccomplishthisobjective？（）

单项选择题 Howcanyoucreatealistenerclassthatreceiveseventswhenthemouseismoved？（）