perfect size array java

How do you specify the size of an array in Java?
You can declare one-dimensional (1D) arrays with any non-negative size. int [] arr = new int[ 10 ]; // Array of size 10 int [] arr2 = new int[ 100 ]; // Array of size 100 int [] arr3 = new int[ 1 ]; // Array of size 1 int [] arr4 = new int[ 0 ]; // Array of size 0
How to fix array size in Java?
The length of an array is fixed when it is created and cannot be changed later.
Java arrays can store elements of any data type, including primitive types such as int, double, and boolean, as well as object types such as String and Integer.
Which is not a good use of a perfect size array?
In the case of the names of marker colors in a box of 8, the number of colors may vary depending on the brand or type of marker.
Therefore, using a perfect size array would not be suitable in this scenario, as it would limit the number of colors that could be stored.
An oversize array is an array where the number of elements used is less than or equal to the memory allocated.
Since the number of elements used in an oversize array is usually less than the array's length, a separate integer variable is used to keep track of how many array elements are currently used.

Java (the language) doesn't have the concept of perfect-sized or oversized arrays. That is only a concept for how the array is used. Since an array knows it's own size at runtime, there is never a need to explicitly specify the size.

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