My calculator\build.xml
.............\build
.............\.....\built-jar.properties
.............\.....\classes
.............\.....\.......\my
.............\.....\.......\..\calculator
.............\.....\.......\..\..........\calculator$event.class
.............\.....\.......\..\..........\calculator.class
.............\.....\.......\..\..........\MyCalculator.class
.............\.....\empty
.............\.....\generated-sources
.............\.....\.................\ap-source-output
.............\dist
.............\....\My_calculator.jar
.............\....\README.TXT
.............\manifest.mf
.............\nbproject
.............\.........\build-impl.xml
.............\.........\genfiles.properties
.............\.........\private
.............\.........\.......\private.properties
.............\.........\.......\private.xml
.............\.........\project.properties
.............\.........\project.xml
.............\src
.............\...\my
.............\...\..\calculator
.............\...\..\..........\calculator.java
.............\...\..\..........\MyCalculator.java