String是Java中常用的类，包含多种常用方法。本文将介绍String类中format方法的具体使用方式，帮助更好地格式化字符串内容。

Java SE 1.5 added the ability to format output using formatting strings like “%5.2f%n” to print a floating point number and a newline. An October 2004 tip titled ...