Exhausted available authentication methods

[wensi liu]

have simple code to connect aws but getting error

 Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

        final SSHClient ssh = new SSHClient();

//        ssh.addHostKeyVerifier("XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX");

        ssh.addHostKeyVerifier(new PromiscuousVerifier()) ;

        ssh.loadKnownHosts();

        ssh.connect(aws instance");

        PKCS8KeyFile keyFile = new PKCS8KeyFile();

        keyFile.init(new File("pem file"));

        ssh.authPublickey("ec2-user", keyFile );

Exception in thread "main" net.schmizz.sshj.userauth.UserAuthException: Exhausted available authentication methods

at net.schmizz.sshj.SSHClient.auth(SSHClient.java:217)

at net.schmizz.sshj.SSHClient.authPublickey(SSHClient.java:316)

at net.schmizz.sshj.SSHClient.authPublickey(SSHClient.java:335)

any idea?

appreciate for any help

Wensi