collections class in java geeksforgeeks

Collections class is a member of the Java Collections FrameworkThe javautilCollections package is the package that contains the Collections class. In Java a separate framework named the Collection Framework has been defined in JDK 12 which holds all the collection classes and interface in it.

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Collections class is basically used with the static methods that operate on the collections or return the collection.

. Any group of individual objects which are represented as a single unit is known as the collection of the objects. The Collection interface javautilCollection and Map interface javautilMap are the two main. All the methods of this class throw the NullPointerException if the collection or object passed.

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