Using Scanner to read all files in folder one at a time gives NoSuchElementException

Question

Following Java code:

File folder = new File("/home");
File[] listofFiles = folder.listFiles();
for (j = 0; j < listofFiles.length; j++) {
  File file = listofFiles[j];
  if (file.isFile() && file.getName().endsWith(".ucf")) {
      String content = new Scanner(new File(file.getName())).useDelimiter("\\Z").next();
      for(i=0;i<content.length-10;i++)
      // do something..
      content = null;
  } // close if..
}

throws

Exception in thread "main" java.util.NoSuchElementException
     at java.util.Scanner.throwFor(Scanner.java:907)
     at java.util.Scanner.next(Scanner.java:1416)
     at c.main(c.java:18)

However, earlier when I was using Scanner to read a particular file to String content, there was no such error at Scanner.next(). Now it gives this exception when I try to traverse through all files.

Answer 1

NoSuchElementException occurs when no more tokens are available.

try this when you are reading

 if(scanner.hasNext())
 scanner.next();