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Collection framework is a framework in java that helps us handle multiple java objects in one shot. For example if you have an employee validation system where you have details about all the employees in an office, you will have lets say 1000 employee objects available in an ArrayList which we can iterate and check if every employee that is going through the door is a valid employee.

Some of the collections we can use are:

a. ArrayList

b. Vector

c. HashMap

d. HashSet

e. etc

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