目录Java Date 转 UTC 时间完整指南核心转换方法1. 使用 Java 8 的java.timeAPI（推荐）2. 使用SimpleDateFormat（传统方式）完整转换工具实现输出示例关键概念解析1. UTC 与 GMT2. 时区处理3. ISO 8601 格式最佳实践
There are already quite some posts about the Singleton-Pattern around, but I would like to start another one on this topic since I would like to know if the Factory-Pattern would be t开发者_JAVA技巧he
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