关于Java的不泛型协变的问题

[GhostAdults]

Java无法自行推断List< T > 的类型 编译时会报出类型转换异常
解决办法:构造对象时显示指明泛型的具体类型
CollectionComparerHelper -> CollectionComparerHelper
simple:
T: Enitity
CollectionComparerHelper comparer = new CollectionComparerHelper<>(oldData, newData, "id");