practice5.1
...........\build
...........\.....\classes
...........\.....\.......\newpackage
...........\.....\.......\..........\NewClass.class
...........\.....\.......\..........\NewClass1.class
...........\.....\.......\..........\NewClass2.class
...........\build.xml
...........\manifest.mf
...........\nbproject
...........\.........\build-impl.xml
...........\.........\genfiles.properties
...........\.........\private
...........\.........\.......\private.properties
...........\.........\.......\private.xml
...........\.........\project.properties
...........\.........\project.xml
...........\src
...........\...\newpackage
...........\...\..........\NewClass.java
...........\...\..........\NewClass1.java
...........\...\..........\NewClass2.java
...........\test