内存
....\.classpath
....\.project
....\.settings
....\.........\org.eclipse.jdt.core.prefs
....\bin
....\...\com
....\...\...\test
....\...\...\....\Computer.class
....\...\...\....\Student.class
....\...\...\....\Test.class
....\...\...\....\Test2.class
....\src
....\...\com
....\...\...\test
....\...\...\....\Computer.java
....\...\...\....\Student.java
....\...\...\....\Test.java
....\...\...\....\Test2.java