GetAllRoles_Service service = new GetAllRoles_Service();
    GetAllRolesInputs inputs = new GetAllRolesInputs();
    JAXBElement<String> username = new JAXBElement<>(new QName("http://tempuri.org/"), String.class, "MyLogin");
    inputs.setUsername(username);
    JAXBElement<String> password = new JAXBElement<>(new QName("http://tempuri.org/"), String.class, "MyPassword");
    inputs.setPassword(password);
    OperationInvocationResult test = service.getWSHttpBindingGetAllRoles().invoke(inputs);  // <-- problematic line
    System.out.print(service.getWSHttpBindingGetAllRoles());
    String roles = "";
    roles = test.getOutputRoleList().getValue().getString().stream().map((s) -> s).reduce(roles, String::concat);

Exception in thread "main" com.sun.xml.internal.ws.client.ClientTransportException: HTTP transport error: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.xml.internal.ws.transport.http.client.HttpClientTransport.getOutput(HttpClientTransport.java:117)
at com.sun.xml.internal.ws.transport.http.client.HttpTransportPipe.process(HttpTransportPipe.java:208)
at com.sun.xml.internal.ws.transport.http.client.HttpTransportPipe.processRequest(HttpTransportPipe.java:130)
at com.sun.xml.internal.ws.transport.DeferredTransportPipe.processRequest(DeferredTransportPipe.java:124)
at com.sun.xml.internal.ws.api.pipe.Fiber.__doRun(Fiber.java:1121)
at com.sun.xml.internal.ws.api.pipe.Fiber._doRun(Fiber.java:1035)
at com.sun.xml.internal.ws.api.pipe.Fiber.doRun(Fiber.java:1004)
at com.sun.xml.internal.ws.api.pipe.Fiber.runSync(Fiber.java:862)
at com.sun.xml.internal.ws.client.Stub.process(Stub.java:448)
at com.sun.xml.internal.ws.client.sei.SEIStub.doProcess(SEIStub.java:178)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:93)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:77)
at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(SEIStub.java:147)
at com.sun.proxy.$Proxy32.invoke(Unknown Source)
at javaapplication1.JavaApplication1.main(JavaApplication1.java:41)