Returns an {@code Integer} instance representing the specified
{@code int} value. If a new {@code Integer} instance is not
required, this method should generally be used in preference to
the constructor {@link #Integer(int)}, as this method is likely
to yield significantly better space and time performance by
caching frequently requested values.
This method will always cache values in the range -128 to 127,
inclusive, and may cache other values outside of this range.
@param i an {@code int} value.
@return an {@code Integer} instance representing {@code i}.
Returns an {@code Integer} instance representing the specified {@code int} value. If a new {@code Integer} instance is not required, this method should generally be used in preference to the constructor {@link #Integer(int)}, as this method is likely to yield significantly better space and time performance by caching frequently requested values.
This method will always cache values in the range -128 to 127, inclusive, and may cache other values outside of this range.
@param i an {@code int} value. @return an {@code Integer} instance representing {@code i}.