Round number

Round number

Double a = (Double) Math.round(3.144444) => a =3.0;

Double a = (Double) Math.round(3.51) => a =4.0;

Double a = (Double) Math.round(3.49) => a =3.0;

Double a = (Double) Math.floor(3.144444) => a =3.0; Round down

Double a = (Double) Math.floor(3.99) => a =3.0; Round down

Double a = (Double) Math.ceil(3.144444) => a =4.0; Round up

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