Directories and Files Printer

Directory_Parser.java

import java.io.File;
import java.io.FileFilter;
import java.io.FileWriter;
import java.io.IOException;

public class Dparser {
	FileWriter out = null;
	
	public Dparser(){
		try {
			out = new FileWriter("Idisk.txt");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) throws Exception {
//		NodeDao ndao = new NodeDao();
//		ndao.show();
		File dir = new File("I:");
		Dparser p = new Dparser();

		p.showall(dir);
		p.out.close();
	}
	
	public void showall(File dir) throws IOException{
		if(dir.isFile()){
			out.write(dir + "\n");
			return;
		}
		out.write("<<-----------------------Dir " + dir + " has------------------->>\n");
		
		File[] dirbelow = getsubdir(dir);
		//get file in current directory
		File[] filebelow = getfiles(dir);
			
		if(dirbelow == null || filebelow == null){
			return;
		}
		//print files in current directory first
		for (File file : filebelow) {
			 showall(file);
		}
		//recursively print anything from sub-directory
		for (File file : dirbelow) {
			 showall(file);
		}
		return;
	}
	
	public File[] getfiles(File dir){
		File[] files = null;

		FileFilter fileFilter = new FileFilter() {
		    public boolean accept(File file) {
		        return (!file.isDirectory());
		    }
		};
		files = dir.listFiles(fileFilter);
		return files;
	}
	
	public File[] getsubdir(File dir){
		File[] files = null;

		// This filter only returns directories
		FileFilter fileFilter = new FileFilter() {
		    public boolean accept(File file) {
		        return file.isDirectory();
		    }
		};
		files = dir.listFiles(fileFilter);
		return files;
	}
}