Need a understanding on this

Question

So in collections if we use for (i:j) print (i) what does it mean?

Answer 1

Bugs-bunny

That's called foreach loop where j should be collection and a should be any type of data like (string, int, double) depends on your collection type.

for example

int[] arr = {1, 2, 4};

for (int k : arr) {
System.out.println (k);
}

Answer 2

It is called enhanced for loop.
You can use with array and collections . Here is eg...

int a[] = {1,2,3,4};
for(int i : a)
System.out.print(i);

Answer 3

Collection and enhanced for loop are different things but can be used together to cycle through your collection of objects.

for(type var: c){

do somthing with var }

Answer 4

Bugs-bunny

Is it Java? Can you give one more example?

Answer 5

Yes . For (a:j)
Print (a);
Used it in for sorting using collections