If your Main class is in a package called FileManagement, then try:

java -cp . FileManagement.Main

in the parent folder of the FileManagement folder.

If your Main class is not in a package (the default package) then cd to the FileManagement folder and try:

java -cp . Main

More info about the CLASSPATH and how the JRE find classes:

• How Classes are Found
• Setting the class path (Solaris/Linux)
• http://en.wikipedia.org/wiki/Classpath_(Java)

To compile the file, open your terminal and type

javac filename.java

To run the generated class file, use

java filename

But to do this you need to have the Java JDK installed in your computer. You can install it with the instructions in How do I install Java?.

I imagine the easiest way would be to press the blue arrow at the top.

If it has to be command line though, try

Javac Main.java

To compile the source to byte code which will give you a Main.class file, then

Java Main

To run it. The oracle website has a quick guide here

You can do this via installing java jdk version 9 and then using jshell.

Just simply use this command:-

$ jshell Then this will get prompted:-

|  Welcome to JShell -- Version 9.0.4
|  For an introduction type: /help intro

jshell>

Then just run your code there.