2D Arraylist

Question

Hello
I have a 2D Array
my problem is i need an dynamic 2D Array to remove elements inside of the inner Array

Answer 1

https://code.sololearn.com/c58JiL4W5QXN/?ref=app

Answer 2

Was there a problem using regular array that you decided to use a dynamic array instead?

Why you need to remove elements from the inner array? can you describe what is it that yoi're trying to do? an example may help clarify I hope.

Answer 3

I am writing an calendar app with a date and note wich i want to save and load This is all working but i cant remove a date within the inner array
Because of this i need a dynamic 2D Array
Maybe with an 2D ArrayList
But i am not sure how

Answer 4

Is it something similar to this-

{{"04/01/20", "Yesterday was Saturday"}, {"05/01/20", "Today is Sunday"}};

Probably if you could just share your code, it would be easy for people to help.

Answer 5

You want to remove all days, months and year from index 1?

Answer 6

You can use HashMaps in Java, the most simple and straightforward way.

Answer 7

BitScrypt would you like an example code?
Considering that you can build on that.

Answer 8

Rishi,
It's been a year since the date of the thread, I don't even remember why I asked that at the time.

I saw your code where you used `ArrayList`, as I understand it, it is one of Java dynamic containers. And as I understand regular arrays are static, in that they are not resize-able, and unable to grow or shrink as necessary.

Answer 9

You have a 2D array and you need a dynamic 2D array to remove elements inside of the inner array?

Have you wrote it right?

Answer 10

Index
0 {{Days}{Months}{Years}}
1 {{1}{5}{2020}}
2 {{3}{12}{2020}}

For example i want to delete date on Index 1 but i can only delete the last element with a normal Array

Answer 11

Ipang what you mean by "Was there a problem using regular array that you decided to use a dynamic array instead?"? Because, there are no non-dynamic arrays in Java right?

Answer 12

Ipang yeah that's right. Both ArrayList and regular arrays are dynamical allocated(on the heap). Only that, normal array don't have a way to be resized

Answer 13

yes

Answer 14

Ok i am trying it
thank you for your help

Answer 15

Would be nice