What is "new" in array?? Why is it used??

Question

int[ ] intArr = new int[5];
System.out.println(intArr.length);

Answer 1

The new keyword is used to create an instance of the class.
Or in other words:
'new' creates an object.
In this case, we are creating the array.

There are some scenerios where this keyword can be ommited:

int[] b = {5,4,2};

This is purely 'syntax sugar'.
Because it is the same as doing:

int[] b = new int[]{5,4,2};

Answer 2

it's use to allocate memory dynamically at run time,
means that your array won't take space during compilation but only when u run it , that's used for memory efficiency

Answer 3

yes

Answer 4

what if I don't use it??

Answer 5

then no problem but your array will take memory of 5 ints before even running of program, nothing bad if u got lot of memory, but is a problem in large arrays

Answer 6

thanks!

Answer 7

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