Comparing the values of two generic Numbers

Question

I want to compare to variables, both of type T extends Number. Now I want to know which of the two variables is greater than the other or equal. Unfortunately I

Answer 1

if(yourNumber instanceof Double) {
    boolean greaterThanOtherNumber = yourNumber.doubleValue() > otherNumber.doubleValue();
    // [...]
}

Note: The instanceof check isn't necessarily needed - depends on how exactly you want to compare them. You could of course simply always use .doubleValue(), as every Number should provide the methods listed here.

Edit: As stated in the comments, you will (always) have to check for BigDecimal and friends. But they provide a .compareTo() method:

if(yourNumber instanceof BigDecimal && otherNumber instanceof BigDecimal) { 
    boolean greaterThanOtherNumber = ((BigDecimal)yourNumber).compareTo((BigDecimal)otherNumber) > 0;
}