I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!
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alias usejava6='export JAVA_HOME=$(/usr/libexec/java_home -v 1.6) ; PATH=$JAVA_HOME/bin:$PATH' | |
alias usejava7='export JAVA_HOME=$(/usr/libexec/java_home -v 1.7) ; PATH=$JAVA_HOME/bin:$PATH' | |
alias usejava8='export JAVA_HOME=$(/usr/libexec/java_home -v 1.8) ; PATH=$JAVA_HOME/bin:$PATH' |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.