package com.ibm.w3;

import java.net.URI;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IOUtils;

public class Dtf {
    final public static String HDFS_PATH ="hdfs://dias:9000";
    public static final String DIR_PATH ="/d10000";
    public static final String FILE_PATH ="/d10000/f11111";
    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub
        
        
        final FileSystem fileSystem = FileSystem.get(new URI(HDFS_PATH), new Configuration());
        
        //create folder
        
        //fileSystem.mkdirs(new Path(DIR_PATH));
        
        // upload
        //final FSDataOutputStream out=fileSystem.create(new Path(FILE_PATH));
        //FileInputStream in = new FileInputStream("C:/workplacebus/business/Important memo.txt");
        //IOUtils.copyBytes(in, out, 1024,true);
        //download
        //final FSDataInputStream in = fileSystem.open(new Path(FILE_PATH));
        //IOUtils.copyBytes(in, System.out, 1024, true);
        
        //remove files
        
        fileSystem.delete(new Path(FILE_PATH), true);
    }

}

----------------------------------------

Eclipse windows 环境配置 请 参考优秀博文 ：

http://my.oschina.net/lanzp/blog/309078?fromerr=blt5oYkF