Bootcamps are just ways to extract money from the pockets of Enterprises with more money than sense. I worked on a project with some COBOL programmers who went to through a "Java in 21 Days" program. They were decent COBOL programmers, I actually learned some useful things about that language and the IBM environment. But Java programmers they were NOT.
https://thedailywtf.com/articles/The_Brillant_Paula_Bean