經過java遞歸思想實現以樹形方式展示出該目錄中的全部子目錄和文件

import java.io.File;

public class FileTest2 
{

public static int count = 0;public static void parse(File[] files)
{    if(files.length == 0)
    {
        FileTest2.count--;
        System.out.println();        return;
    }    else
    {        for(File f : files)
        {            if(f.isDirectory())
            {
                FileTest2.count++;                for(int i = 1; i <= FileTest2.count; i++)
                {
                    System.out.print("\t");
                }

                System.out.println(f.getName());                File[] files2 = f.listFiles();

                FileTest2.parse(files2);
            }

        }        for(File f : files)
        {            if(!f.isDirectory())
            {                for(int i = 0; i <= FileTest2.count; i++)
                {
                    System.out.print("\t");
                }
                System.out.println(f.getName());
            }
        }
        FileTest2.count--;
    }

}public static void main(String[] args)
{    File file = new File("C:\\Program Files\\Java\\jre6");    File[] files = file.listFiles();
    FileTest2.parse(files);
}

}