Fix deprecated method newinstance (#3602)

* Migrate CI to GitHub Actions (#3570)

* Migrate CI to GitHub Actions

* merge travis import and disabled

* add java build and cache

* pin runner

* add codecov

* add deploy job

* add badge

* fix for act

* add missing jdk fonts for act

* configure git

* set preview branch

* remove travis references

* add token

* fix deprecated newInstance() method.
Co-authored-by: NMarcello Teodori <151025+mteodori@users.noreply.github.com>

activiti-core/activiti-engine/src/main/java/org/activiti/engine/impl/bpmn/behavior/WebServiceActivityBehavior.java

@@ -272,7 +272,7 @@ public class WebServiceActivityBehavior extends AbstractBpmnActivityBehavior {
         Class<?> wsdlImporterClass;
         try {
           wsdlImporterClass = Class.forName("org.activiti.engine.impl.webservice.CxfWSDLImporter", true, Thread.currentThread().getContextClassLoader());
-          XMLImporter importerInstance = (XMLImporter) wsdlImporterClass.newInstance();
+          XMLImporter importerInstance = (XMLImporter) wsdlImporterClass.getDeclaredConstructor().newInstance();
           xmlImporterMap.put(theImport.getImportType(), importerInstance);
           importerInstance.importFrom(theImport, sourceSystemId);
 

activiti-core/activiti-engine/src/main/java/org/activiti/engine/impl/util/ReflectUtil.java

@@ -136,7 +136,7 @@ public abstract class ReflectUtil {
   public static Object instantiate(String className) {
     try {
       Class<?> clazz = loadClass(className);
-      return clazz.newInstance();
+      return clazz.getDeclaredConstructor().newInstance();
     } catch (Exception e) {
       throw new ActivitiException("couldn't instantiate class " + className, e);
     }

activiti-core/activiti-engine/src/test/java/org/activiti/engine/test/bpmn/event/error/mapError/ThrowCustomExceptionDelegate.java

@@ -38,7 +38,7 @@ public class ThrowCustomExceptionDelegate implements JavaDelegate {
       RuntimeException exception = null;
       try {
         Class<?> clazz = Class.forName(exceptionClassName);
-        exception = (RuntimeException) clazz.newInstance();
+        exception = (RuntimeException) clazz.getDeclaredConstructor().newInstance();
 
       } catch (Exception e) {
         throw new ActivitiException("Class not found", e);

activiti-core/activiti-json-converter/src/main/java/org/activiti/editor/language/json/converter/BpmnJsonConverter.java

@@ -509,7 +509,7 @@ public class BpmnJsonConverter implements EditorJsonConstants,
         Class<? extends BaseBpmnJsonConverter> converter = convertersToJsonMap.get(flowElement.getClass());
         if (converter != null) {
             try {
-                BaseBpmnJsonConverter converterInstance = converter.newInstance();
+                BaseBpmnJsonConverter converterInstance = converter.getDeclaredConstructor().newInstance();
                 if (converterInstance instanceof FormKeyAwareConverter) {
                     ((FormKeyAwareConverter) converterInstance).setFormKeyMap(formKeyMap);
                 }
@@ -542,7 +542,7 @@ public class BpmnJsonConverter implements EditorJsonConstants,
             Class<? extends BaseBpmnJsonConverter> converter = convertersToJsonMap.get(artifact.getClass());
             if (converter != null) {
                 try {
-                    converter.newInstance().convertToJson(artifact,
+                    converter.getDeclaredConstructor().newInstance().convertToJson(artifact,
                                                           this,
                                                           model,
                                                           container,
@@ -843,7 +843,7 @@ public class BpmnJsonConverter implements EditorJsonConstants,
             String stencilId = BpmnJsonConverterUtil.getStencilId(shapeNode);
             Class<? extends BaseBpmnJsonConverter> converter = convertersToBpmnMap.get(stencilId);
             try {
-                BaseBpmnJsonConverter converterInstance = converter.newInstance();
+                BaseBpmnJsonConverter converterInstance = converter.getDeclaredConstructor().newInstance();
                 if (converterInstance instanceof DecisionTableAwareConverter) {
                     ((DecisionTableAwareConverter) converterInstance).setDecisionTableMap(decisionTableMap);
                 }