All about java 1. Explain collection hierarchy 2.Explain exception hierarchy 3.how many of classes in java 4.what are problem u faced while deploying the project and etc on deployment

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Collection hierarchy in Java includes interfaces like Collection, List, Set, Queue, and Map with their respective implementations.

Collection interface is the root interface in the collection hierarchy
List interface extends Collection and allows duplicate elements, with implementations like ArrayList and LinkedList
Set interface extends Collection and does not allow duplicate elements, with implementations like HashSet and TreeSet
Queue interface extends Collection and represents a FIFO data structure, with implementations like PriorityQueue
Map interface is not a subtype of Collection and represents key-value pairs, with implementations like HashMap and TreeMap

All about java 1. Explain collection hierarchy 2.Explain exception hierarchy 3.how many of classes in java 4.what are problem u faced while deploying the project and etc on deployment

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