I am following a Java tutorial that I should first browse to the JAR file that I have saved in Documents folder on my Mac..How do we go there by terminal commands?
You should be able to write down in the console
cd /Users/username/Documents/ when username is your user, then you can write
ls to show a list of files in that folder.
You can type
cd /Users/yourusername/Documents to go to your documents folder.
cd is the terminal command to change the directory you're working in.
You can also type
cd ~/Documents (~ is short for your home directory).
Finally, if you go to your home folder in the Finder, you can drag Documents onto the terminal window, and it will show the path to it. This is useful if you ever have a file or folder that you want to learn the path to.
This is all you need to do to run the jar file:
java -jar ~/Documents/jar
This is really what you want to do, as this runs the file you've created and the
command only sets the terminal to work in the Documents directory (i.e., folder), but little else.