Can't see project folders in IntelliJ IDEA

Question

Every once in a while, I open an old project and I can\'t see any of the folders in the intelliJ project viewer. I can see all the files at the root.. but no folders. Yes I

Answer 1

For me, the java folder was not showing up. I went into File->Project Structure. In the second column, I selected on _main. In the third column, I selected the tab "sources". In what I call the fourth column, where the "+Add Content Root" is shown, I verified, the java source/folder was present. In my case, there was an extra source folder, which was the current location. I removed this, applied and the java folder immediately showed up.