Hey all
I have been working on a project which allows me to write to a file and retrieve from that file, but i having trouble with it
These are my inputs:
private int flightno;
private int sourceairportco de;
private int destinationaipo rtcode;
private String takeofftime;
private String landingtime;
These are variables at the top declared
ObjectOutputStr eam output;
ObjectInputStre am input;
i have this in my code
File file = new File(System.get Property("user. dir") + "/data/flights.txt");
(not sure if this is the problem maybe its not writing to the correct place, i have created the data folder with an empty flights.txt file in it)
and here is what aint working
private void btnaddMousePres sed(java.awt.ev ent.MouseEvent evt) {
FlightRecord record;
try{
record = new FlightRecord(
Integer.parseIn t(txtflightno.g etText()),
Integer.parseIn t(txtsource.get Text()),
Integer.parseIn t(txtdestinatio n.getText()),
txttakeoff.getT ext(),
txtlanding.getT ext());
output.writeObj ect(record);
}
catch (Exception e){
JOptionPane.sho wMessageDialog( this, "Something wrong!", "Error",JOption Pane.ERROR_MESS AGE );
}
Any help would be great.
12 1937 Nepomuk 3,112
Recognized Expert Specialist
Are you using Windows? If so, one mistake (maybe not the only, but certainly one, which would cause problems) is here:
File file = new File(System.get Property("user. dir") + "/data/flights.txt");
The File seperator under Windows is \ (System.getProp erty("file.sepa rator") or File.seperator) . You should use those two anyway, to provide independency from the OS.
If you don't want to use either of those, use: - File file = new File(System.getProperty("user.dir") + "\\data\\flights.txt");
1.) Please use code tags when posting code
2.) I'm not sure I get the exact problem you're getting but this might help.
Hmm messed about with the file seperator stuff didnt seem to change anything, got to be a problem somewhere else.
Hmm messed about with the file seperator stuff didnt seem to change anything, got to be a problem somewhere else.
Could you post the full stacktrace or error message that you're getting?
Im using netbeans to do it, and the try and catch blocks just say somethings wrong when i try and add the info to the file,. not sure where i can find the full error message report
Im using netbeans to do it, and the try and catch blocks just say somethings wrong when i try and add the info to the file,. not sure where i can find the full error message report
In the catch block just put
replace e with your exception variable name and then watch the console window when running it to see the fireworks.
think its something to do with the directopry of the file its being saved to
File file = new File(System.get Property("user. dir") + "\\data\\flight s.txt");
my flights file is premade and is in
C:\Documents and Settings\Fozzi\ assignment7\dat a\flights.txt
is that the correct path? maybe i need to add something extra
think its something to do with the directopry of the file its being saved to
File file = new File(System.get Property("user. dir") + "\\data\\flight s.txt");
my flights file is premade and is in
C:\Documents and Settings\Fozzi\ assignment7\dat a\flights.txt
is that the correct path? maybe i need to add something extra
What's your current working directory?
You can also print the value of
System.getPrope rty("user.dir") + "\\data\\flight s.txt" to the console to see if it's path you intended.
My current working directory is
C:\Documents and Settings\Fozzi\ assignment7
assignment 7 being the main project folder that i am working from there are several folders within and i created the data folder with the txt file in it, in assignment 7
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