BigDecimal大于等于/小于等于/小于/大于/等于 比较器工具方法

public static void main(String[] args) {
        BigDecimal self = new BigDecimal("100");
        BigDecimal constant = new BigDecimal("99");

        System.out.println("大于等于结果：" + greater(self, constant, true));
        System.out.println("大于结果：" + greater(self, constant, false));
        System.out.println("小于等于结果：" + less(self, constant, true));
        System.out.println("小于结果：" + less(self, constant, false));
        System.out.println("等于结果：" + equals(self, constant));


    }

    public static Boolean less(BigDecimal self, BigDecimal constant, boolean needEqual) {
        if (needEqual) {
            return  self.compareTo(constant) < 1 ;
        }else {
            return self.compareTo(constant) == -1;
        }
    }

    public static Boolean greater(BigDecimal self, BigDecimal constant, boolean needEqual) {
        if (needEqual) {
            return  self.compareTo(constant) > -1 ;
        }else {
            return self.compareTo(constant) == 1;
        }
    }

    public static Boolean equals(BigDecimal self, BigDecimal constant) {
        return self.compareTo(constant) == 0;
    }