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1.JUC常见类java中的JUC就是java.util.concurrent包下的一些标准类或者接口，这个包里的东西都是和多线程相关的，以下就是这个包中常见的类和接口的用法及示例：1.1 Callable 接口这个接口类似于Runnable接口，只是Runnable描述的任务不带返回值，Calla...

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