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In this post, we will see the difference between List and ArrayList in Java. List is an interface where ArrayList is concrete implementation, so List is more generic than ArrayList. You can instance an ArrayList in below two ways.You might have seen this code before. If you use 1st way, you can change the implementation later easily. For example: You need to change your implementation from ArrayList to LinkedList, you can simply change implementation, you don’t need to worry about making changes to all the code where variable list is being used. You won’t be able to do

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