JProgressBar uppdaterar inte värdet

for(int i=0; i < files.length; i++) {
						String fileName = files[i].getName();
						int dotPos = fileName.lastIndexOf(".");
						String extension = fileName.substring(dotPos+1);
						
						if(!ResizeImage.createResizedCopy(files[i].getPath(), fileName, extension))
							allOk = false;
						
						// update progress
						float state = (float) ((i+1.0)/numFiles)*100;
						int newValue = Math.round(state);
						System.out.println(newValue);
						
						progress.setValue(newValue);
					}