Java and SSL

Hi,
I received a JAR file from Barclays bank (Java SDK for ARCOT Transfort Merchant Services). Anyway I managed to install the jar file, Netbeans can use the librar etc. etc.
The problem is about SSL.
The jar file comes with 3 PEM files and system uses SSL to connect to barclays. So I assume in one way or other there 3 cert files need to be installed as well.Can someone help me on this?
This is the output when I run the software

init:
deps-jar:
compile:
run:
javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: Untrusted Server Certificate Chain
        at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1520)
        at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:182)
        at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:176)
        at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:975)
        at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:123)
        at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:511)
        at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:449)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:817)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1029)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1056)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1040)
        at com.arcot.comm.SSLTransport.connect(com/arcot/comm/SSLTransport.java:225)
        at com.arcot.xfms.XFMSClient.receiveResponse(com/arcot/xfms/XFMSClient.java:1330)
        at com.arcot.xfms.XFMSClient.checkIfAuthPossible(com/arcot/xfms/XFMSClient.java:122)
        at javaapplication13.Main.main(Main.java:45)
Caused by: java.security.cert.CertificateException: Untrusted Server Certificate Chain
        at com.sun.net.ssl.X509TrustManagerJavaxWrapper.checkServerTrusted(SSLSecurity.java:600)
XFMSFactory.checkIfAuthPossible failed.
Error num: 9006
Error msg: Unable to connect to MS: Connect failed to www.vbv2bmshost.co.uk:9707 'com.arcot.comm.TransportException: Unable to connect to the server or IO error occurs.'
        at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:967)
        ... 11 more
BUILD SUCCESSFUL (total time: 5 seconds)