Request

{
	"model-namespace": "https://kiegroup.org/dmn/testDMNJavaFunction",
	"model-name": "TestDMNJavaFunction",
	"decision-name": [],
	"decision-id": [],
	"dmn-context": {
		"Element":"111",
		"ElementList":["1112","2221"]
		}
}

Response

{
  "type" : "SUCCESS",
  "msg" : "OK from container 'TestJavaFunction_1.0.0-SNAPSHOT'",
  "result" : {
    "dmn-evaluation-result" : {
      "messages" : [ {
        "dmn-message-severity" : "ERROR",
        "message" : "FEEL ERROR while evaluating literal expression 'function( element, elementList ) external { java :... [string clipped after 50 chars, total length is 165]': Error resolving external function as defined by: function( element, elementList ) external { java : { class : \"com.rnd.testjavafunction.Utils\", method signature : \"listStartsWith(String,java.util.List<String>
  )\" } }",
          "message-type" : "FEEL_EVALUATION_ERROR",
          "source-id" : "_5EEDC9B4-AED6-4FB5-B2FF-9DEE45ADB21E"
        } ],
        "model-namespace" : "https://kiegroup.org/dmn/_5CC66AFD-6B95-466A-ABFD-A26770C9D1D5",
        "model-name" : "TestDMNJavaFunction",
        "decision-name" : [ ],
        "dmn-context" : {
          "listStartsWith" : "function listStartsWith( element, elementList )",
          "Element" : "111",
          "ElementList" : [ "1112", "2221" ],
          "Test Java" : null
        },
        "decision-results" : {
          "_7F1BD262-C05F-4496-887F-3E9CCAC55FE1" : {
            "messages" : [ ],
            "decision-id" : "_7F1BD262-C05F-4496-887F-3E9CCAC55FE1",
            "decision-name" : "Test Java",
            "result" : null,
            "status" : "SUCCEEDED"
          }
        }
      }
    }
  }