java - Is singleton approach right for accessing/maintaining database and internet connection -


so , working on app requires local db connection , uses web services send , receive data back-forth well.

  • whenever need , database operation create object of dbconnection class (this name of class using database) , perform operations on same.

  • similarly connecting internet use defaulthttpclient , create static object of same, , whenever need connection , call webservice create httpresponse object , response data.

1) using right approach or pattern ?

2) 1 more thing focusing on point number 2 static , singleton work same way ?

am using right approach or pattern ?

i don't think so. if use singleton (or static) the connection make difficult if code needs used / reused in context there may need more 1 connection; e.g. if make application multi-threaded, or turn library.

singletons have problems respect testability ...

generally speaking, can singletons (or statics) can context parameter of kind. dependency injection (di) frameworks provide neat way create shared objects , "wire" them other objects need them ... without using singletons or statics. alternatively, can hand, in variety of ways.

does static , singleton work same way ?

singletons design pattern. statics java language feature can used implement singleton pattern. not same thing (or same kind of thing), related.


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