Program: 30209
Project: 30209
Buggy source:
@Override public void execute(AdminCommandContext ctxt){
  final ActionReport report=ctxt.getActionReport();
  final Logger logger=ctxt.getLogger();
  try {
    Node n=domain.getNodes().getNode(node);
    if (n == null) {
      ConfigSupport.apply(new SingleConfigCode<Nodes>(){
        public Object run(        Nodes param) throws PropertyVetoException, TransactionFailure {
          Node newNode=param.createChild(Node.class);
          newNode.setName(node);
          if (installdir != null && installdir != "String_Node_Str")           newNode.setInstallDir(installdir);
          if (nodedir != null && nodedir != "String_Node_Str")           newNode.setNodeDir(nodedir);
          if (nodehost != null && nodehost != "String_Node_Str")           newNode.setNodeHost(nodehost);
          newNode.setType(type);
          param.getNode().add(newNode);
          return newNode;
        }
      }
,domain.getNodes());
    }
    Server s=domain.getServers().getServer(instanceName);
    if (s == null) {
      ConfigSupport.apply(new SingleConfigCode<Servers>(){
        public Object run(        Servers param) throws PropertyVetoException, TransactionFailure {
          Server newServer=param.createChild(Server.class);
          newServer.setConfigRef(config);
          newServer.setName(instanceName);
          newServer.setNodeRef(node);
          if (systemProperties != null) {
            for (            final Map.Entry<Object,Object> entry : systemProperties.entrySet()) {
              final String propName=(String)entry.getKey();
              final String propValue=(String)entry.getValue();
              SystemProperty newSP=newServer.createChild(SystemProperty.class);
              newSP.setName(propName);
              newSP.setValue(propValue);
              newServer.getSystemProperty().add(newSP);
            }
          }
          param.getServer().add(newServer);
          return newServer;
        }
      }
,domain.getServers());
      Cluster thisCluster=domain.getClusterNamed(clusterName);
      if (thisCluster != null) {
        ConfigSupport.apply(new SingleConfigCode<Cluster>(){
          public Object run(          Cluster param) throws PropertyVetoException, TransactionFailure {
            ServerRef newServerRef=param.createChild(ServerRef.class);
            newServerRef.setRef(instanceName);
            newServerRef.setLbEnabled(lbEnabled);
            param.getServerRef().add(newServerRef);
            return param;
          }
        }
,thisCluster);
      }
    }
    report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
  }
 catch (  TransactionFailure tfe) {
    report.setMessage(localStrings.getLocalString("String_Node_Str","String_Node_Str",instanceName,server.getName()));
    report.setActionExitCode(ActionReport.ExitCode.FAILURE);
    report.setFailureCause(tfe);
    return;
  }
catch (  Exception e) {
    report.setMessage(localStrings.getLocalString("String_Node_Str","String_Node_Str",instanceName,server.getName()));
    report.setActionExitCode(ActionReport.ExitCode.FAILURE);
    report.setFailureCause(e);
    return;
  }
}

Fixed version (ground truth):
@Override public void execute(AdminCommandContext ctxt){
  final ActionReport report=ctxt.getActionReport();
  try {
    Node n=domain.getNodes().getNode(node);
    if (n == null) {
      ConfigSupport.apply(new SingleConfigCode<Nodes>(){
        @Override public Object run(        Nodes param) throws PropertyVetoException, TransactionFailure {
          Node newNode=param.createChild(Node.class);
          newNode.setName(node);
          if (installdir != null && !"String_Node_Str".equals(installdir))           newNode.setInstallDir(installdir);
          if (nodedir != null && !"String_Node_Str".equals(nodedir))           newNode.setNodeDir(nodedir);
          if (nodehost != null && !"String_Node_Str".equals(nodehost))           newNode.setNodeHost(nodehost);
          newNode.setType(type);
          param.getNode().add(newNode);
          return newNode;
        }
      }
,domain.getNodes());
    }
    Server s=domain.getServers().getServer(instanceName);
    if (s == null) {
      ConfigSupport.apply(new SingleConfigCode<Servers>(){
        public Object run(        Servers param) throws PropertyVetoException, TransactionFailure {
          Server newServer=param.createChild(Server.class);
          newServer.setConfigRef(config);
          newServer.setName(instanceName);
          newServer.setNodeRef(node);
          if (systemProperties != null) {
            for (            final Map.Entry<Object,Object> entry : systemProperties.entrySet()) {
              final String propName=(String)entry.getKey();
              final String propValue=(String)entry.getValue();
              SystemProperty newSP=newServer.createChild(SystemProperty.class);
              newSP.setName(propName);
              newSP.setValue(propValue);
              newServer.getSystemProperty().add(newSP);
            }
          }
          param.getServer().add(newServer);
          return newServer;
        }
      }
,domain.getServers());
      Cluster thisCluster=domain.getClusterNamed(clusterName);
      if (thisCluster != null) {
        ConfigSupport.apply(new SingleConfigCode<Cluster>(){
          public Object run(          Cluster param) throws PropertyVetoException, TransactionFailure {
            ServerRef newServerRef=param.createChild(ServerRef.class);
            newServerRef.setRef(instanceName);
            newServerRef.setLbEnabled(lbEnabled);
            param.getServerRef().add(newServerRef);
            return param;
          }
        }
,thisCluster);
      }
    }
    report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
  }
 catch (  TransactionFailure tfe) {
    report.setMessage(localStrings.getLocalString("String_Node_Str","String_Node_Str",instanceName,server.getName()));
    report.setActionExitCode(ActionReport.ExitCode.FAILURE);
    report.setFailureCause(tfe);
    return;
  }
catch (  Exception e) {
    report.setMessage(localStrings.getLocalString("String_Node_Str","String_Node_Str",instanceName,server.getName()));
    report.setActionExitCode(ActionReport.ExitCode.FAILURE);
    report.setFailureCause(e);
    return;
  }
}