Java searching recursive

JP.java

public class SearchSize extends SwingWorker<Long, Long> {
	private String currentPath;
	private JLabel lblSize;
	private long totalSize = 0;

	public SearchSize(String path, JLabel lblSize){
		this.currentPath = path;

		this.lblSize = lblSize;
	}
	
	@Override
	protected Long doInBackground() throws Exception {
		
		totalSize = 0;
		
		File file = new File(currentPath);

		for (File f : file.listFiles()){
			System.out.println(f.getAbsolutePath());
			if (f.isFile()){

				totalSize += f.length();

				publish(totalSize);

			}
			else if(f.isDirectory()) {

				totalSize(currentPath+"/"+f.getName());
			}
		}
		return totalSize;
	}

	@Override
	protected void process(List<Long> chunks) {			
		System.out.println(chunks);
		System.out.println(lblSize);
		lblSize.setText("Total size of files: " + chunks.get(chunks.size()-1)/1024 + " KB");
	}

	public void totalSize(String path){
		File file = new File(path);

		for (File f : file.listFiles()){
			System.out.println(f.getAbsolutePath());
			if (f.isFile()){

				totalSize += f.length();

				publish(totalSize);

			}
			else if(f.isDirectory()) {

				totalSize(path+"/"+f.getName());
			}
		}
	}
}