1. The problem statement, all variables and given/known data:

As a excercise I have to compile a program (Hello2.java) with a class file (HelloText.java) in another directory. (As you seen in the screenshot)
I´m setting a PATH and a CLASSPATH (system variables). It´s working without a command. But if I use a command like java or javac which I need to compile ITS NOT WORKING.
I can´t retrace why the bash is doing this respectively is not doing this.

2. Relevant commands, code, scripts, algorithms:

PATH=$PATH:<directory>, CLASSPATH =$CLASSPATH:<directory>, cd (change directory), javac

3. The attempts at a solution (include all code and scripts):

see the screenshot.

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):

Beuth Hochschule für Technik, Berlin, Germany, Radners, Programmierung I (Praxis)