Need an important loop for my project.

[Nixter1997]

Hey,

I have a school assignment to do on eclipse over the summer months.I am trying to make a vending machine.I want a piece of coding that will loop back to the beginning if the person selects an invalid item.In other words I mean that there are 5 selections and if he presses >5 it would say "Illegal Entry" and start the program again at the welcome screen.

Help would be greatly appreciated as I didn't find anything on Google about it.

P.S I am using Eclipse Juno.

Thank you.

[JosAH]

Basically your problem has nothing to do with Eclipse (it is innocent as always). Think of a do { ... } while loop that terminates when the number input by the user is in the wanted interval. It doesn't hurt to craft a little method for this purpose that returns the wanted number; creating separate little methods reduces the complexity of the control flow so you won't end up with wall paper of if-s and while-s and complicated spaghetti code.

kind regards,

Jos

[Nixter1997]

Thank you for you help.

[Nixter1997]

I used to do it on pascal.But on java it's a bit tricky.

[DarrylBurke]

Here you go: Control Flow Statements (The Java™ Tutorials > Learning the Java Language > Language Basics)

db

[Nixter1997]

tkx a lot

[Tolls]

I used to do it on pascal.But on java it's a bit tricky.

OK, it may be over 25 years since I did Pascal, but the logic and flow is not significantly different.

[Tolls]

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