JScience

Amount.valueOfでparseしてみる

code:java

Amount<Length> k0 = Amount.valueOf(1, SI.KILOMETER);

Amount<Length> k1 = Amount.valueOf(1.0, SI.KILOMETER);

Amount<Length> k2 = (Amount<Length>) Amount.valueOf("1km");

Amount<Length> k3 = (Amount<Length>) Amount.valueOf("1.0km");

Amount<Length> k4 = (Amount<Length>) Amount.valueOf("1 km");

System.out.println("k0 is exact =>" + k0.isExact());

System.out.println("k1 is exact =>" + k1.isExact());

System.out.println("k2 is exact =>" + k2.isExact());

System.out.println("k3 is exact =>" + k3.isExact());

System.out.println("k4 is exact =>" + k4.isExact());

System.out.println("k0==k1 => " + k0.equals(k1));

System.out.println("k0==k2 => " + k1.equals(k2));

System.out.println("k0 approximates k1 => " + k0.approximates(k1));

System.out.println("k0 approximates k2 => " + k1.approximates(k2));

System.out.println("k1 + k2 => " + k1.plus(k2));

k0 is exact =>true

k1 is exact =>false

k2 is exact =>false

k3 is exact =>false

k4 is exact =>true

k0==k1 => false

k0==k2 => true

k0 approximates k1 => true

k0 approximates k2 => true

k1 + k2 => (1.9999999999999998 ± 2.2E-16) km