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A collection represents a group of objects, known as its elements. Some collections allow duplicate elements and others do not. Some are ordered and others unordered. The JDK does not provide any direct implementations of this interface: it provides implementations of more specific subinterfaces like Set and List.
COLLECTION meaning: 1 : the act or process of getting things from different places and bringing them together; 2 : a group of interesting or beautiful objects brought together in order to show or study them or as a hobby often + of sometimes used figuratively
Dec 22, 2022 · Collection vs Collections in Java. Collection is called interface in java whereas Collections is called a utility class in java and both of them can be found in java.util.package. Collection is used to represent a single unit with a group of individual objects whereas collections is used to operate on collection with several utility methods.
4 [countable] a group of poems, stories, or pieces of music published together as one book or disk a collection of stories by women writers a collection of favorite Christmas music money 5 [ countable ] an act of collecting money to help a charity or during a church service; the money collected a house-to-house collection for youth organizations The total collection last week amounted to $250.
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Jun 12, 2024 · boolean containsAll(Collection c) This method takes a collection c and checks whether all the elements of c is present in this Collection or not. The method returns True if all elements in the collection c, are present in this Collection otherwise it returns False. Function 2: addAll () Method.
A collection represents a group of objects, known as its elements. Some collections allow duplicate elements and others do not. Some are ordered, and others are unordered. Collections that have a defined encounter order are generally subtypes of the SequencedCollection interface. The JDK does not provide any direct implementations of this ...
