https://www.jetbrains.com/idea/help/intellij-idea.html
https://www.jetbrains.com/idea/help/creating-and-running-your-first-java-application.html
https://www.jetbrains.com/idea/help/debugging-your-first-java-application.html
原文：http://www.cnblogs.com/elvalad/p/4185790.html