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How to input End of File indicator

 
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Hello,

I read in a book that end of file could be given as input for a program. For Windows, it's <Ctrl> + Z.
But it never works.

This is the code i tried to work on:



Please let me know if I need to post the full program.
 
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That looks like something out of chapter 14 of the Deitel book.

C:\JavaPrograms\DeitelCh14>edit Eipe.java

C:\JavaPrograms\DeitelCh14>javac Eipe.java

C:\JavaPrograms\DeitelCh14>java Eipe
Campbell
Campbell
Ritchie
Ritchie
^Z

C:\JavaPrograms\DeitelCh14>

You see I am, unusually, running Windows, and the program turned off when I used ctrl-Z. Please provide more details about what goes wrong.
 
John Eipe
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I'm running it from NetBeans IDE. Is that the reason, it doesn't work?

John Eipe
 
John Eipe
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I tried it from command line and it works! What should I do in Net Beans?

John Eipe
 
Campbell Ritchie
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Don't know, I am afraid.
 
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I have worked on Netbeans

See, Editors like netbeans have an inbuild prompt that emulate the command prompt of the OS,
However, these should not be seens as a benchmark for your system.
usually editors now a days have limited support for text input via thier console.

if you do want to have an interactive user input in a CUI interface,
run the program via the os command prompt.

The problem is that now a days CUI is obsolete, you can prepare a GUI in a matter of seconds that does the same job in a more pleasing way.
 
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Note that Eclipse allows this magic to happen
 
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I had the same problem. I use intellij Idea. someone told me that Intellij use linux shell so you must End via ctrl + d not ctrl +z. His advice solved the problem.
 
Campbell Ritchie
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Welcome to the Ranch

Yes, ctrl‑D is the end of file indicator for Linux/Unix/etc., but it is usually a bad idea to use it at the terminal because you are risking closing System.in. Don't therefore use while (myScanner.hasNext() ... for System.in because that will behave like an infinite loop.
 
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John Eipe wrote:I read in a book that end of file could be given as input for a program. For Windows, it's  <Ctrl> + Z.
But it never works.


Hmmm, what about using your own terminator?

It's a bit retro (1960's-retro to be exact), but it still does the job and it saves the Ctrl-D/Z problem that Campbell mentioned.
Just pick a string which should never appear in real life, and have your program terminate when it receives it.

FYI: "classic" terminators for punched-card decks were things like '$$$$' or 'ZZZZ' - which may well be where Ctrl-Z came from. :-)

HIH

Winston

Oops - Just realised this is a 9 year old thread. My apologies. :-)
 
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