栈
..\build
..\.....\classes
..\.....\.......\stack
..\.....\.......\.....\stack.class
..\build.xml
..\manifest.mf
..\nbproject
..\.........\build-impl.xml
..\.........\genfiles.properties
..\.........\private
..\.........\.......\private.properties
..\.........\.......\private.xml
..\.........\project.properties
..\.........\project.xml
..\src
..\...\stack
..\...\.....\stack.java
..\test