I am trying to access a file to read it and write on it using this code:
RandomAccessFile file1 = new RandomAccessFile("C:\\lol.txt", "rw");
It returns me an error "File not Found (IOException)".
The file exists and it is in that exact folder. What am I missing?
Unless your run your Java application as an administrator, you won't have write access to C:.
The following code
public static void main(String[] args) throws Exception {
RandomAccessFile file1 = new RandomAccessFile("C:\\lol.txt", "rw");
}
will give you
Exception in thread "main" java.io.FileNotFoundException: C:\lol.txt (Access is denied)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at java.io.RandomAccessFile.<init>(Unknown Source)
at Test.Main.main(Main.java:79)
The javadoc for RandomAccessFile constructor states this:
FileNotFoundException - if the mode is "r" but the given string does not denote an existing regular file, or if the mode begins with "rw" but the given string does not denote an existing, writable regular file and a new regular file of that name cannot be created, or if some other error occurs while opening or creating the file
Just move your file to another location, like C:\Users\You.
FileNotFoundException is a checked exception. You need to either wrap it in a try-catch block or make your method rethrow it by declaring that the method throws FileNotFoundException, like I've shown in my answer (I used Exception because it's a parent class).
C:\. This is a permission error. Put it in yourMy Documentsfolder.