query: Why can a class member lost its value in Android?
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 85964
negative_passages.text: Android: ClassNotFoundException when passing serializable object to Activity
negative_passages.docid: 29043
negative_passages.text: Why are Objective-C delegates usually given the property assign instead of retain?
negative_passages.docid: 31737
negative_passages.text: Why aren't static data members allowed in local classes?
negative_passages.docid: 96790
negative_passages.text: Accessing members in your own class: use (auto)properties or not?
negative_passages.docid: 114816
negative_passages.text: Is null reference possible?
negative_passages.docid: 139658
negative_passages.text: Inner Class access to Outer Class members
negative_passages.docid: 6255
negative_passages.text: Is it safe to delete a NULL pointer?
negative_passages.docid: 71758
negative_passages.text: Why can an Object member variable not be both final and volatile in Java?
negative_passages.docid: 78238
negative_passages.text: Nullable type is not a nullable type?
negative_passages.docid: 5724
negative_passages.text: Why does my ArrayList contain N copies of the last item added to the list?
negative_passages.docid: 134386
negative_passages.text: Should you ever use protected member variables?
negative_passages.docid: 68260
negative_passages.text: What are all the member-functions created by compiler for a class? Does that happen all the time?
negative_passages.docid: 67426
negative_passages.text: Why are wait() and notify() declared in Java's Object class?
negative_passages.docid: 35129
negative_passages.text: Why does String.valueOf(null) throw a NullPointerException?
negative_passages.docid: 11956
negative_passages.text: Java generics type erasure: when and what happens?
negative_passages.docid: 78970
negative_passages.text: Android: Dynamically asscociating data type with an activity