Java ArrayList<String[]>

Question

I would like to create a 2D array named employees where I know the number of columns (fixed 5 and represent employee's data) but number of rows is somewhat dynamic. So I did something like this:

static ArrayList<String[]> employees = new ArrayList<String[]>();

I figured how to add employees but I can't figure out how to get a specific data out of one employee only, using .get() for example.

employees.get(row)[column] should work. eG employees.get(0)[1] — user6073886
– user6073886, Commented Nov 17, 2020 at 10:39
Though it's probably easier to create a class Employee rather than use a String[]. — Jeroen Steenbeeke
– Jeroen Steenbeeke, Commented Nov 17, 2020 at 10:40

Mureinik · Accepted Answer · 2020-11-17 10:40:10Z

5

get would return a row, which is a String[]. If you want a specific value from it, you'll have to subscript it using the [] operator:

String specificData = employees.get(1)[2]; // Or any other indexes

answered Nov 17, 2020 at 10:40

Mureinik

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Mustafa Poya · Accepted Answer · 2020-11-17 10:42:25Z

2

the first dimension which is any ArrayList you have to call by get() method to access and then the returned value is an array which you cann access by index:

ArrayList<String[]> employees = new ArrayList<String[]>();
employees.add(new String[] {"a", "b"});
System.out.println(employees.get(0)[0]);

answered Nov 17, 2020 at 10:42

Mustafa Poya

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