java - MalformedURLException on reading file from HDFS -

i have following test program read file hdfs.

public class filereader {     public static final string namenode_ip = "172.32.17.209";     public static final string file_path = "/notice.html";      public static void main(string[] args) throws malformedurlexception,             ioexception {         string url = "hdfs://" + namenode_ip + file_path;          inputstream = new url(url).openstream();         inputstreamreader isr = new inputstreamreader(is);         bufferedreader br = new bufferedreader(isr);         string line = br.readline();         while(line != null) {             system.out.println(line);             line = br.readline();         }     } } 

it giving java.net.malformedurlexception

exception in thread "main" java.net.malformedurlexception: unknown protocol: hdfs     @ java.net.url.<init>(url.java:592)     @ java.net.url.<init>(url.java:482)     @ java.net.url.<init>(url.java:431)     @ in.ksharma.hdfs.filereader.main(filereader.java:29) 

register hadoop's url handler. standard url handler won't know how handle hdfs:// scheme.

try this:

public static void main(string[] args) throws malformedurlexception,             ioexception {         url.seturlstreamhandlerfactory(new fsurlstreamhandlerfactory());          string url = "hdfs://" + namenode_ip + file_path;          inputstream = new url(url).openstream();         inputstreamreader isr = new inputstreamreader(is);         bufferedreader br = new bufferedreader(isr);         string line = br.readline();         while(line != null) {             system.out.println(line);             line = br.readline();         }     }