public static void main(String[] args) { // a>b 值 = 1 System.out.println(new BigDecimal(1).compareTo(new BigDecimal(0))); // a=b 值 = 0 System.out.println(new BigDecimal(1).compareTo(new BigDecimal(1))); // a<b 值 = -1 System.out.println(new BigDecimal(0).compareTo(new BigDecimal(1))); }
所以
若 a>=b 值>-1
若 a<=b 值<1