递归 查找 一个文件夹所有的子文件夹和文件

import java.io.*; 

public class RecursionTest{
	public static void main(String[] args){
		String fullFileName = "c:/A";
		File f = new File(fullFileName);
		p(f.getName());
		int count = 1;
		readFile(f, count);
	}
	
	private static void readFile(File f, int count){
		String pre = "";
		for(int i=0; i<count; i++){
			pre+="    ";
		}
		
		
		if(f.exists()){
			File[] fs = f.listFiles();
			for(int i=0; i<fs.length; i++){
				p(pre + fs[i].getName());
				if(fs[i].isDirectory()){
					readFile(fs[i], count + 1);
				}else if(fs[i].isFile()){
				}
			}
		}else{
			p("不存在");
		}
	}
	
	private static void p(Object o){
		System.out.println(o.toString());
	}
}