“selectiondoesnotcontainamaintype”解决⽅法在运⾏java程序时，出现了错误“selection does not contain a main type”。
是因为.java⽂件不在项⽬的src路径内，也就是说源代码未被eclipse编译，字节码不存在⽆法运⾏了。我在新建java project时勾选了Create separate folders for sources and class files。事实上，不应使⽤默认项，应勾选Use project folder for sources and class files。editordoes not contain a main