Ray's playground

摘要： Along with Java identity (memory location) and object equality, we pickup database identity (location in the persistent data store). We now have three methodsfor identifying objects:　　■ Object i... 阅读全文

摘要： There is no single Spring container. Spring comes with several containerimplementations that can be categorized into two distinct types. Bean factories(defined by the org.springframework.beans.factory... 阅读全文