A long parameter list can indicate that a new structure should be created to wrap the numerous parameters or that the function is doing too many things.
With a maximum number of 4 parameters:
public void doSomething(int param1, int param2, int param3, String param4, long param5) { ... }
public void doSomething(int param1, int param2, int param3, String param4) { ... }
Methods annotated with :
@RequestMapping
(and related shortcut annotations, like @GetRequest
) @javax.ws.rs.GET
) @org.springframework.beans.factory.annotation.Autowired
@javax.inject.Inject
@com.fasterxml.jackson.annotation.JsonCreator
may have a lot of parameters, encapsulation being possible. Such methods are therefore ignored.