4/26/2023 0 Comments Java collectionsIt is used to replace all occurrences of one specified value in a list with the other specified value. It is used to return a set backed by the specified map. It is used to get an immutable list consisting of n copies of the specified object. It is used to get the minimum value of the given collection, according to the natural ordering of its elements. It is used to get the maximum value of the given collection, according to the natural ordering of its elements. It is used to get an array list containing the elements returned by the specified enumeration in the order in which they are returned by the enumeration. It returns -1 if there is no such occurrence in the specified list. It is used to get the starting position of the last occurrence of the specified target list within the specified source list. It is used to get the starting position of the first occurrence of the specified target list within the specified source list. It is used to get the number of elements in the specified collection equal to the specified object. It is used to replace all of the elements of the specified list with the specified elements. It is used to get the enumeration over the specified collection. It is used to get the sorted set that has no elements. It returns an empty sorted map which is immutable. It is used to get the set that has no elements. It is used to get an empty navigable set which is immutable in nature. It returns an empty navigable map which is immutable. It returns an empty map which is immutable. It is used to get a List Iterator that has no elements. It is used to get a List that has no elements. It is used to get an Iterator that has no elements. It is used to get an enumeration that has no elements. It returns true if the two specified collections have no elements in common. It is used to copy all the elements from one list into another list. It is used to returns a dynamically typesafe view of the specified sorted set. It is used to returns a dynamically typesafe view of the specified sorted map. It is used to returns a dynamically typesafe view of the specified set. It is used to returns a dynamically typesafe view of the specified queue. It is used to returns a dynamically typesafe view of the specified navigable set. It is used to returns a dynamically typesafe view of the specified navigable map. It is used to returns a dynamically typesafe view of the specified map. It is used to returns a dynamically typesafe view of the specified list. It is used to returns a dynamically typesafe view of the specified collection. It searches the list for the specified object and returns their position in a sorted list. It returns a view of a Deque as a Last-in-first-out (LIFO) Queue. It is used to adds all of the specified elements to the specified collection. (It takes roughly zero imagination to think of one.)īut I don't know how you would (objectively) distinguish between an ordinary use-case and a "specially useful" one. Indeed, any program where you need to use an immutable list with one element is a valid use-case. It is part of the specification of the method see above.Īre there any special useful use-cases for this method, rather than just being a convenience method?Ĭlearly, there are use-cases where it is convenient to use the singletonList method. (An application that creates vast numbers of singleton lists is unusual to say the least.) It may also be a bit faster and/or save a bit of memory, but it is unlikely that these small savings will be significant. to save you having to write a sequence of statements to: Why would I want to have a separate method to do that? "Returns an immutable list containing only the specified object.
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