The int keyword and 32-bit integer data type need not be supported in a Java Card implementation. A Java Card virtual machine that does not support the int data type will reject programs which use the int data type or 32-bit intermediate values.

The result of an arithmetic expression produced by a Java Card virtual machine must be equal to the result produced by a Java virtual machine, regardless of the input values. A Java Card virtual machine that does not support the int data type must reject expressions that could produce a different result.