摘要：概述 <code>DecimalFormat</code> is a concrete subclass of <code>NumberFormat</code> that formats decimal numbers. It has a variety of features designed 阅读全文

摘要：概述 Immutable, arbitrary-precision signed decimal numbers. 不可变的、任意精度的 有符号的 十进制数；A {@code BigDecimal} consists of an arbitrary precision integer <i>unsc 阅读全文