VCO connection error

I am getting the following exception/error when Itry to connect to vCo through java-eclipse. Please help me how to resolve this

Exception in thread "main" org.springframework.web.client.ResourceAccessException: I/O error: Connection to https://10.92.65.215 refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connection to https://10.92.65.215 refused
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:453)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:415)
    at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:213)
    at com.vmware.o11n.sdk.rest.client.services.AbstractService.getObjectAppending(AbstractService.java:64)
    at com.vmware.o11n.sdk.rest.client.services.WorkflowService.getWorkflow(WorkflowService.java:40)
    at OrgHandShake.connectionTest(OrgHandShake.java:25)
    at OrgHandShake.main(OrgHandShake.java:16)
Caused by: org.apache.http.conn.HttpHostConnectException: Connection to https://10.92.65.215 refused
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:158)
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:573)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:425)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
    at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:88)
    at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:46)
    at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:49)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:438)
    ... 6 more
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
    at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:375)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:148)
    ... 16 more