What are the cases that cause the I/O error writing to output file

Question

may i ask what are the cases that cause the I/O error writing to output file ??
cause i have the write path and the input file has data
any ideas???

Answer 1

and the permission is to write first time then append to itBy "permission" is meant the operating system controlled rights that let
particular users do specified things with specified files or directories.
the error message is a the title of the message
I/O error writing to output fileThe java runtime actually creates a much more useful error message than
this but, unfortunately, your program is swallowing this error message and
replacing it with the message you see.
Somewhere in your code you have something like:try {
    // all sorts of stuff goes here
    // including the code that is intended to
    // write to the file
} catch(IOException ioe) {
    System.out.println("I/O error writing to output file");
        // add this line
    //ioe.printStackTrace();
}It might say Exception rather than IOException.
To get a much more useful error message add the commented line.