File list (Check if you may need any files):
lab12
.....\build
.....\.....\classes
.....\.....\.......\Main
.....\.....\.......\....\ID3$DataPoint.class
.....\.....\.......\....\ID3$TreeNode.class
.....\.....\.......\....\ID3.class
.....\.....\.......\....\Panel.class
.....\build.xml
.....\dane.txt
.....\dist
.....\....\lab12.jar
.....\....\README.TXT
.....\ID3$DataPoint.class
.....\ID3$TreeNode.class
.....\ID3.class
.....\manifest.mf
.....\nbproject
.....\.........\build-impl.xml
.....\.........\genfiles.properties
.....\.........\private
.....\.........\.......\private.properties
.....\.........\.......\private.xml
.....\.........\project.properties
.....\.........\project.xml
.....\src
.....\...\Main
.....\...\....\ID3.java
.....\...\....\Panel.java