ICU(International Component for Unicode/Unicode国际化组件) 是 Unicode 支持、软件国际化、全球化的一个成熟的、广泛应用的库，是一个由 IBM 赞助、支持和使用的，基于"IBM公共许可证"，用于支持软件国际化的开源项目。这个库为 C 和 Java? 编程语言提供了一整套操作 Unicode 数据的函数。这个库是在一种无限制的开放源码许可证下发布的，这使它可以在许多应用程序中使用。-ICU (International Component for Unicode/Unicode international component) is Unicode support, software internationalization and globalization of a mature, widely used library is an IBM-sponsored, supported and used, based on " IBM Public License " to support international open source software projects. The library for C and Java? Programming language provides a set of Unicode data operation functions. The library is in an unlimited released under open source licenses, which it can use in many applications.