I am trying to make a program that will get all files within a jar file, and then copy them. This is the code I am using to copying files:
public static void copyFolder(File src, File dest)
throws IOException{
if(src.isDirectory()){
//if directory not exists, create it
if(!dest.exists()){
dest.mkdir();
System.out.println("Directory copied from "
+ src + " to " + dest);
}
//list all the directory contents
String files[] = src.list();
for (String file : files) {
//construct the src and dest file structure
File srcFile = new File(src, file);
File destFile = new File(dest, file);
//recursive copy
copyFolder(srcFile,destFile);
}
}else{
//if file, then copy it
//Use bytes stream to support all file types
InputStream in = new FileInputStream(src);
OutputStream out = new FileOutputStream(dest);
byte[] buffer = new byte[1024];
int length;
//copy the file content in bytes
while ((length = in.read(buffer)) > 0){
out.write(buffer, 0, length);
}
in.close();
out.close();
System.out.println("File copied from " + src + " to " + dest);
}
}
But there is an error - java.io.FileNotFoundException: (Access is denied) in OutputStream out = new FileOutputStream(dest);. Now, I have no idea why or what does that really mean? How can I fix it?
Plus, I have absolutely no idea how to extract files from a jar file. I have seen the ZipFile class but I don't really know how to use it... So that leaves me with 3 questions: 1. Whats wrong with the copying code? 2. What does Access is denied mean? 3. Can anyone give me a method for getting files from a jar file? Because jar.listFiles() returns an empty list.
Thanks in advance!
