Error on using JClouds SshClient

[Nipun Udara]

Hi all

FileInputStream inputStream=new FileInputStream("C:/Users/Udara/input.txt");
        try{
          ssh.connect();
          Payload payload=new InputStreamPayload(inputStream);
          ssh.put("input.txt",payload);
        }finally {
            if (ssh!=null){
                ssh.disconnect();
            }
        }

when i use Jclouds sshClient put method above i got the following error,

[ERROR] <<
(ec2-user:rsa[fingerprint(f7:fd:af:ae:25:0b:d3:99:2a:c2:ee:8c:83:be:92:0c),sha1(0f:4b:9e:f7:a7:f8:b1:4e:f4:7c:68:3b:2e:e2:e7:68:f3:25:8c:32)]@
54.85.181.97:22) error acquiring Put(path=[input.txt]) (not retryable): null
java.lang.NullPointerException
at
org.jclouds.sshj.SshjSshClient$PutConnection$1.getLength(SshjSshClient.java:323)
at
net.schmizz.sshj.sftp.SFTPFileTransfer$Uploader.upload(SFTPFileTransfer.java:182)
 at
net.schmizz.sshj.sftp.SFTPFileTransfer$Uploader.access$100(SFTPFileTransfer.java:172)
at net.schmizz.sshj.sftp.SFTPFileTransfer.upload(SFTPFileTransfer.java:70)
 at net.schmizz.sshj.sftp.SFTPClient.put(SFTPClient.java:248)
at
org.jclouds.sshj.SshjSshClient$PutConnection.create(SshjSshClient.java:314)
 at
org.jclouds.sshj.SshjSshClient$PutConnection.create(SshjSshClient.java:290)
at org.jclouds.sshj.SshjSshClient.acquire(SshjSshClient.java:196)
 at org.jclouds.sshj.SshjSshClient.put(SshjSshClient.java:346)
at org.apache.airavata.gfac.utils.JCloudsFileTransfer.uploadFileToEc2(JCl

 I can put strings or StringPayLoads but when i use InputStreamPayloads  i
got this error. Any help regarding this

Regards
Nipun Udara