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General Tech Bugs & Fixes 2 years ago
Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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I am not able to figure out why ArrayList<int> is not allowed but ArrayList<int[]> is allowed.
I was under the impression that primitive data types are not allowed in Collections, so why is this legit?
An array in Java is an object. In Java, we can create arrays by using new operator and we know that every object is created using new operator. Hence we can say that array is also an object.
array
new
Collection only works on anything which is Object. int is the primitive datatype and int[] is the Object.
Object
int
int[]
That is the reason ArrayList is not allowed but ArrayList is allowed.
ArrayList
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