Hadoop's HDFS file operation realizes uploading files to HDFS

HDFS file operation examples, including upload files to HDFS, download files from HDFS and delete files on HDFS, we refer to use it

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.*;
import java.io.File;
import java.io.IOException;
public class HadoopFile {
    private Configuration conf =null;
    public HadoopFile(){
        conf =new Configuration();
        conf.addResource(new Path("/hadoop/etc/hadoop/core-site.xml"));
    }
    public HadoopFile(Configuration conf){
        this.conf =conf;
    }
    public boolean sendFile(String path,String localfile){
        File file=new File(localfile);
        if (!file.isFile()) {
            System.out.println(file.getName());
            return false;
        }
        try {
            FileSystem localFS =FileSystem.getLocal(conf);
            FileSystem hadoopFS =FileSystem.get(conf);
            Path hadPath=new Path(path);
            FSDataOutputStream fsOut=hadoopFS.create(new Path(path+"/"+file.getName()));
            FSDataInputStream fsIn=localFS.open(new Path(localfile));
            byte[] buf =new byte[1024];
            int readbytes=0;
            while ((readbytes=fsIn.read(buf))>0){
                fsOut.write(buf,0,readbytes);
            }
            fsIn.close();
            fsOut.close();
            FileStatus[] hadfiles= hadoopFS.listStatus(hadPath);
            for(FileStatus fs :hadfiles){
                System.out.println(fs.toString());
            }
            return true;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return false;
    }
    public boolean delFile(String hadfile){
        try {
            FileSystem hadoopFS =FileSystem.get(conf);
            Path hadPath=new Path(hadfile);
            Path p=hadPath.getParent();
            boolean rtnval= hadoopFS.delete(hadPath, true);
            FileStatus[] hadfiles= hadoopFS.listStatus(p);
            for(FileStatus fs :hadfiles){
                System.out.println(fs.toString());
            }
            return rtnval;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return false;
    }

    public boolean downloadFile(String hadfile,String localPath){
        try {
            FileSystem localFS =FileSystem.getLocal(conf);
            FileSystem hadoopFS =FileSystem.get(conf);
            Path hadPath=new Path(hadfile);
            FSDataOutputStream fsOut=localFS.create(new Path(localPath+"/"+hadPath.getName()));
            FSDataInputStream fsIn=hadoopFS.open(hadPath);
            byte[] buf =new byte[1024];
            int readbytes=0;
            while ((readbytes=fsIn.read(buf))>0){
                fsOut.write(buf,0,readbytes);
            }
            fsIn.close();
            fsOut.close();
            return true;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return false;
    }
}