Simulation of the operating system using java s document management system provides a multi-user login, but every time there is only one user in the system, each additional user, give the user an additional subdirectories as his personal directory, when a user file on the corresponding subdirectory in his add.

filesystem_java
...............\filesystem
...............\..........\可执行文件
...............\..........\..........\user.txt
...............\..........\..........\user.txt~
...............\..........\..........\user1
...............\..........\..........\.....\f
...............\..........\..........\文件系统.jar
...............\..........\源文件
...............\..........\......\login.java
...............\..........\......\manage.java
...............\..........\......\register.java
...............\..........\......\userflag.java
...............\..........\......\window.java
...............\..........\说明文档
...............\..........\........\说明文档.doc

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