
hi ..iam sory iam not ask question in proper way my doudt is it is string or integer or double whatever it is we to add list like i.e i want to add integer i.e 1 to list then i want to add like list.add(1) is it work? or i add like list.add("1"); that means if we try to add an element to list compulsory can i add like string format only ? or directly like list.add(1).

You can use list.add(1)
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