Sounds like there is an instance of java. Exe in either your windows or windows\system directory. You can always search for all occurrences of java.exe.
Javac does not come with jre, check if the jre is somewhere there in the path variables, if so install jdk and set the bin location of jdk in the path variables.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.