writing to a text file from cmmand prompt

[Garry Meax]

i want to write the contant of below array to a text file

private int num_Survey[]= new int[5];

and i use the following code to write

try
{
FileOutputStream F = new FileOutputStream("test.txt");
    for(int i=0; i<num_Survey.length; i++)
    {
    F.write(num_Survey[i]);
    }

}catch(Exception e)
{
System.out.println("Error");
}

here is the contant of test.txt


why is it not writing the numbers (which is present in num_Survey[])


thanks

[ October 05, 2005: Message edited by: Garry Meax ]
[ October 05, 2005: Message edited by: Garry Meax ]

[Ernest Friedman-Hill]

It is writing the numbers. There are five bytes in your file, one for each of the ints you write. But you don't want it to write the numbers -- you want it to write a textual representation of the numbers that you can read. The byte '1' doesn't correspond to the character "1" (which is actually the byte '49'!)

You want to do something like

PrintWriter writer = new PrintWriter(new FileWriter("test.txt"), true);
for(int i=0; i<num_Survey.length; ++i) {
    writer.println(num_Survey[i]);
}

Have a look at Sun's I/O tutorial to learn more about what's going on.

[Anirvan Majumdar]

Another way could be that you store your current "int" value into an Integer value.Like:
Integer num = new Integer(num_Survey[i]);

Thereof, you can easily use BufferedWriter to print it into any file.

[Garry Meax]

thanks Ernest for the quick reply. and thanks u too Anirvan.

Ernest, the code u gave,

PrintWriter writer = new PrintWriter(new FileWriter("test.txt"), true);
for(int i=0; i<num_Survey.length; ++i) 
{
  writer.println(num_Survey[i]);
}

it works but the thing is it writes those numbers vertically. i want to write them to file horizontally.

i thought i coud achieve it by changing println to print but it doesn't write anything when i changed

writer.println(num_Survey[i]);

to

writer.print(num_Survey[i]);

[ October 05, 2005: Message edited by: Garry Meax ]