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Based on this statement there are limited uses cases where var keyword is allowed. The var keyword is allowed only in cases where a right part of an assignment expression contains an explicit type of variable, that is for assignments of literals and the result of constructor invocation.

Allowed only for assignments of literals and , result of constructor invocation and explicit casts:

var i = 42;
var l = 42L;
var s = "Hello";
var list = new ArrayList<Integer>();
var t = (long) l;

Disallowed for all other cases:

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