Configuration conf = new Configuration();
conf.set("fs.defaultFS","swebhdfs://one.hdp:50470");
FileSystem fs = FileSystem.get(conf);
FileStatus[] fsStatus = fs.listStatus(new Path("/"));
for(int i = 0; i < fsStatus.length; i++){
   System.out.println(fsStatus[i].getPath().toString());
}

private static String username = "hdfs-user";
private static char[] password = "hadoop".toCharArray();
public static LoginContext kinit() throws LoginException {
  LoginContext lc = new LoginContext(HdfsMain.class.getSimpleName(), new CallbackHandler() {
  public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
    for(Callback c : callbacks){
      if(c instanceof NameCallback)
        ((NameCallback) c).setName(username);
      if(c instanceof PasswordCallback)
        ((PasswordCallback) c).setPassword(password);
    }
 }});
 lc.login();
 return lc;
}

HdfsMain {
  com.sun.security.auth.module.Krb5LoginModule required client=TRUE;
};

Configuration conf = new Configuration();
conf.set("fs.defaultFS", "hdfs://one.hdp:8020");
conf.set("hadoop.security.authentication", "kerberos");
UserGroupInformation.setConfiguration(conf);

LoginContext lc = kinit();
UserGroupInformation.loginUserFromSubject(lc.getSubject());

FileSystem fs = FileSystem.get(conf);
FileStatus[] fsStatus = fs.listStatus(new Path("/"));

for(int i = 0; i < fsStatus.length; i++){
  System.out.println(fsStatus[i].getPath().toString());
}

Caused by: KrbException: null (68)
    at sun.security.krb5.KrbAsRep.<init>(KrbAsRep.java:76)
    at sun.security.krb5.KrbAsReqBuilder.send(KrbAsReqBuilder.java:316)
    at sun.security.krb5.KrbAsReqBuilder.action(KrbAsReqBuilder.java:361)
    at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:766)
    ... 15 more
Caused by: KrbException: Identifier doesn't match expected value (906)
    at sun.security.krb5.internal.KDCRep.init(KDCRep.java:140)
    at sun.security.krb5.internal.ASRep.init(ASRep.java:64)
    at sun.security.krb5.internal.ASRep.<init>(ASRep.java:59)
    at sun.security.krb5.KrbAsRep.<init>(KrbAsRep.java:60)
    ... 18 more