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This article mainly introduces "what is the role of the maximum capacity of ArrayList in Java". In daily operation, I believe that many people have doubts about the role of the maximum capacity of ArrayList in Java. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the question of "what is the role of the maximum capacity of ArrayList in Java?" Next, please follow the editor to study!

The source code wrote a note:

/ * The maximum size of array to allocate. * Some VMs reserve some header words in an array. * Attempts to allocate larger arrays may result in * OutOfMemoryError: Requested array size exceeds VM limit * / private static final int MAX_ARRAY_SIZE = Integer.MAX_VALUE-8

It should mean that some virtual machines retain some header information in the array. Avoid memory overflows!

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