java.math.BigDecimal 比较大小

BigDecimal val1 = new BigDecimal (101);
BigDecimal val2 = new BigDecimal (111);

//使用compareTo方法比较
if(val1.compareTo(val2) == -1){
    System.out.println("val1小于val2");
}

if(val1.compareTo(val2) == 0){
    System.out.println("val1等于val2");
}

if(val1.compareTo(val2) == 1){
    System.out.println("val1大于val2");
}