Java 基础之 IO 和 NIO 补完 作者：james 原文链接：https://ld246.com/article/1512039236654 来源网站：链滴 许可协议：署名-相同方式共享 4.0 国际 (CC BY-SA 4.0) Java Stream，File，IO ● 关于NIO和IO的比较，参考： Java NIO系列教程（十二） Java NIO与IO java包之java java包之 java.nio ● 参考： java NIO系列教程 15 Java NIO Path ● 翻译自： 15Java NIO Path ● Java的java.nio.file.Path接口是JavaNIO 2 update的一部分，在Java6和Java7中得到更新。Java pa h接口在java7中被加入到Java NIO中。Path接口位于java.nio.file包中，所以Java file包中，所以Java Path接口的全名是 java.nio.file.Path。 ● 一个Java Path接口代表了一个文件系统中的path路径。path路径可以指向文件或目录。一个路径 以是绝对路径也可以是相对路径。一个绝对路径是从文件系统根目录指向该文件或路径的全路径。一 相对路径是指相对于其他路径一个文件或目录的相对路径。相对路径可能比较费解，不用担心，我会 该文中详细介绍。 ● 对于操作系统

--; 6. If its refCount decrease to zero, we MUST deallocate the ByteBuff which means putting its NIO ByteBuffers back to ByteBuffAllocator. Besides, nobody can access the ByteBuff with refCount = 0. decreasing to zero, the RefCnt will trigger the registered ​Recycler​ to deallocate the allocated NIO ByteBuffers (Putting those ByteBuffers back to the ​reservoir ​of ByteBuffAllocator). We also have duplicated one or the original one will free its memory, because they share the same NIO ByteBuffers. If you want to retain the NIO ByteBuffers even if the origin one called ByteBuff#release(), you can do like

[--message-load-balancing ] [--name ] [--nio] [--no-amqp-acceptor] [--no-autocreate] [--no-autotune] [--no-fsync] [--no-hornetq-acceptor] The name of the broker (Default: same as host) --nio Sets the journal as nio. --no-amqp-acceptor Disable the AMQP specific acceptor. journal. --no-fsync Disable usage of fdatasync (channel.force(false) from java nio) on the journal --no-hornetq-acceptor Disable the HornetQ specific

[--message-load-balancing ] [--name ] [--nio] [--no-amqp-acceptor] [--no-autocreate] [--no-autotune] [--no-fsync] [--no-hornetq-acceptor] The name of the broker (Default: same as host) --nio Sets the journal as nio. --no-amqp-acceptor Disable the AMQP specific acceptor. journal. --no-fsync Disable usage of fdatasync (channel.force(false) from java nio) on the journal --no-hornetq-acceptor Disable the HornetQ specific

[--message-load-balancing ] [--name ] [--nio] [--no-amqp-acceptor] [--no-autocreate] [--no-autotune] [--no-fsync] [--no-hornetq-acceptor] The name of the broker (Default: same as host) --nio Sets the journal as nio. --no-amqp-acceptor Disable the AMQP specific acceptor. journal. --no-fsync Disable usage of fdatasync (channel.force(false) from java nio) on the journal --no-hornetq-acceptor Disable the HornetQ specific

[--message-load-balancing ] [--name ] [--nio] [--no-amqp-acceptor] [--no-autocreate] [--no-autotune] [--no-fsync] [--no-hornetq-acceptor] The name of the broker (Default: same as host) --nio Sets the journal as nio. --no-amqp-acceptor Disable the AMQP specific acceptor. journal. --no-fsync Disable usage of fdatasync (channel.force(false) from java nio) on the journal --no-hornetq-acceptor Disable the HornetQ specific

(clustered= server-out:17:30:25,152 INFO [org.apache.activemq.artemis.core.server] AMQ221013: Using NIO Journal server-out:17:30:25,195 INFO [org.apache.activemq.artemis.core.server] AMQ221043: Protocol implementations. Apache ActiveMQ Artemis ships with two implementations: Java NIO. The first implementation uses standard Java NIO to interface with the file system. This provides extremely good performance data has been persisted. Using AIO will typically provide even better performance than using Java NIO. The AIO journal is only available when running Linux kernel 2.6 or later and after having installed

(clustered= server-out:17:30:25,152 INFO [org.apache.activemq.artemis.core.server] AMQ221013: Using NIO Journal server-out:17:30:25,195 INFO [org.apache.activemq.artemis.core.server] AMQ221043: Protocol implementations. Apache ActiveMQ Artemis ships with two implementations: Java NIO. The first implementation uses standard Java NIO to interface with the file system. This provides extremely good performance data has been persisted. Using AIO will typically provide even better performance than using Java NIO. The AIO journal is only available when running Linux kernel 2.6 or later and after having installed

(clustered= server-out:17:30:25,152 INFO [org.apache.activemq.artemis.core.server] AMQ221013: Using NIO Journal server-out:17:30:25,195 INFO [org.apache.activemq.artemis.core.server] AMQ221043: Protocol implementations. Apache ActiveMQ Artemis ships with two implementations: Java NIO. The first implementation uses standard Java NIO to interface with the file system. This provides extremely good performance data has been persisted. Using AIO will typically provide even better performance than using Java NIO. The AIO journal is only available when running Linux kernel 2.6 or later and after having installed

[--message-load-balancing ] [--name ] [--nio] [--no-amqp-acceptor] [--no-autocreate] [--no-autotune] [--no-fsync] [--no-hornetq-acceptor] The name of the broker (Default: same as host) --nio Sets the journal as nio. --no-amqp-acceptor Disable the AMQP specific acceptor. journal. --no-fsync Disable usage of fdatasync (channel.force(false) from java nio) on the journal --no-hornetq-acceptor Disable the HornetQ specific