What is the difference between Type List and type ArrayList in Java

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Typelist v/s ArrayList. If anybody can help?
Jul 9, 2018 in Java by Daisy
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2 answers to this question.

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Always TypeList is preferred over ArrayList. The first has the advantage that the implementation of the List can change without affecting the rest of the code. This will be a difficult task to do with an ArrayList, not only because you will need to change ArrayList to LinkedList everywhere, but also because you may have used ArrayList specific methods.
answered Jul 9, 2018 by Akrati
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By List, you actually tell, that your object implements List interface only, but you don't specify what class your object belongs to.

By  ArrayList, you specify that your object class is a resizable-array.

So, the first version makes your code more flexible in future.

Class ArrayList - Resizable-array implementation of the List interface.

Interface List - An ordered collection (also known as a sequence). The user of this interface has precise control over where in the list each element is inserted.

Array - container object that holds a fixed number of values of a single type.

answered Aug 28, 2019 by Sirajul
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