Check if BigDecimal value is in range

Question

I have BiGDecimal price and i need to check if it is in some range. For example should be 3 conditions:

if (price >= 0 and price <=500) {
   ....
} else if (price >=500 && price <=1000) {
   ....
} else if (price > 1000) {
   ....
}

How to do it right using BigDecimal type.

Answer 1

Lets make it generic:

public static <T extends Comparable<T>> boolean isBetween(T value, T start, T end) {
    return value.compareTo(start) >= 0 && value.compareTo(end) <= 0;
}

Answer 2

If you already use Apache commons lang, one option is to use the Range class instead of writing your own utility method:

@Test
public void bigDecimalInRange() {
  Range<BigDecimal> myRange = Range.between(BigDecimal.TEN, BigDecimal.valueOf(300));
  BigDecimal tooSmallAmount = new BigDecimal("2.50");
  assertFalse(myRange.contains(tooSmallAmount));

  BigDecimal rightAmount = new BigDecimal("10.01");
  assertTrue(myRange.contains(rightAmount));
}