java相关目录操作

 一、获取目录下的所有文件名

package Test;

import java.io.File;

/**
 * @author yinxm
 * @version 1.0 2005/06/17
 *
 * This class can take file's path and file's name;
 * you must give the path where you want to take the file.
 */
public class TakeFilePathAndName {

    public static void main(String[] args) {
        // This is the path where the file's name you want to take.
        String path = "C://Documents and Settings//yinxm//デスクトップ//TestFile";
        getFile(path);
    }

    private static void getFile(String path){
        // get file list where the path has
        File file = new File(path);
        // get the folder list
        File[] array = file.listFiles();

        for(int i=0;i<array.length;i++){
            if(array[i].isFile()){
                // only take file name
                System.out.println("^^^^^" + array[i].getName());
                // take file path and name
                System.out.println("#####" + array[i]);
                // take file path and name
                System.out.println("*****" + array[i].getPath());
            }else if(array[i].isDirectory()){
                getFile(array[i].getPath());
            }
        }
    }
}

转自 http://blog.csdn.net/tomorrowzm/article/details/3693653

 

二、判断目录是否存在

try
{
if(!(new File("D:/java/newdata/").isDirectory()))
{
new File("D:/java/newdata/").mkdir();
}
}
catch(SecurityException e)
{
e.printStackTrace();
}

转自 http://hi.baidu.com/iloverobot/item/6d024010bde7d3a6feded591