How does the system/process react if the value of an element in the array is replaced with a new one?

In Java, arrays are objects with a fixed size that contain elements of the same type. If you replace the value of an array element with a new one, the following happens:

• The reference or value in the array cell at the specified index is simply changed to the new one.
• If it is a primitive type (e.g., int), the value is overwritten.
• If it is an object, the reference to the old object is replaced with a reference to the new one.

The system does not create a new array or change the size — only the content at the index is modified.

Example:

int[] numbers = {1, 2, 3};
numbers[1] = 10; // now the array is {1, 10, 3}