Explain collection hierarchi 2. given goibibo site url and asked to find search bar table content etc.3)reverse string coding question 4. selenium basic questions. java oops

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Collection hierarchy in Java refers to the relationship between different types of collections such as List, Set, and Map.

Java collections framework includes interfaces like Collection, List, Set, and Map.
List is an ordered collection that allows duplicate elements, Set is an unordered collection that does not allow duplicates, and Map is a key-value pair collection.
Examples: ArrayList and LinkedList are classes that implement the List interface, HashSet and TreeSet implement the Set interface, and HashMap and TreeMap implement the Map interface.

Explain collection hierarchi 2. given goibibo site url and asked to find search bar table content etc.3)reverse string coding question 4. selenium basic questions. java oops

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