diff --git a/testing-modules/mocks/pom.xml b/testing-modules/mocks/pom.xml
index 281fff38c2..88fc6367aa 100644
--- a/testing-modules/mocks/pom.xml
+++ b/testing-modules/mocks/pom.xml
@@ -67,7 +67,7 @@
         <javafaker.version>0.15</javafaker.version>
         <jukito.version>1.5</jukito.version>
         <easymock.version>3.5.1</easymock.version>
-        <jmockit.version>1.41</jmockit.version>
+        <jmockit.version>1.49</jmockit.version>
         <jimf.version>1.1</jimf.version>
     </properties>
 
diff --git a/testing-modules/mocks/src/main/java/com/baeldung/jmockit/AdvancedCollaborator.java b/testing-modules/mocks/src/main/java/com/baeldung/jmockit/AdvancedCollaborator.java
index ef7484cfdd..61afccc745 100644
--- a/testing-modules/mocks/src/main/java/com/baeldung/jmockit/AdvancedCollaborator.java
+++ b/testing-modules/mocks/src/main/java/com/baeldung/jmockit/AdvancedCollaborator.java
@@ -8,12 +8,12 @@ public class AdvancedCollaborator {
         i = string.length();
     }
     public String methodThatCallsPrivateMethod(int i){
-        return privateMethod() + i;
+        return protectedMethod() + i;
     }
     public int methodThatReturnsThePrivateField(){
         return privateField;
     }
-    private String privateMethod(){
+    protected String protectedMethod(){
         return "default:";
     }
     class InnerAdvancedCollaborator{}
diff --git a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/AdvancedCollaboratorIntegrationTest.java b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/AdvancedCollaboratorIntegrationTest.java
index e55a69895f..ff69a701e7 100644
--- a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/AdvancedCollaboratorIntegrationTest.java
+++ b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/AdvancedCollaboratorIntegrationTest.java
@@ -1,37 +1,33 @@
 package com.baeldung.jmockit;
 
-import static org.junit.Assert.assertEquals;
+import mockit.*;
+import org.junit.Test;
 
-import java.util.ArrayList;
+import java.io.Serializable;
+import java.util.Comparator;
 import java.util.List;
 
-import com.baeldung.jmockit.AdvancedCollaborator;
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
-import mockit.Deencapsulation;
-import mockit.Expectations;
-import mockit.Invocation;
-import mockit.Mock;
-import mockit.MockUp;
-import mockit.Mocked;
-import mockit.Tested;
-import mockit.integration.junit4.JMockit;
+public class AdvancedCollaboratorIntegrationTest {
 
-@RunWith(JMockit.class)
-public class AdvancedCollaboratorIntegrationTest<MultiMock extends List<String> & Comparable<List<String>>> {
+    interface IList<T> extends List<T> {}
+    interface IComparator extends Comparator<Integer>, Serializable {}
+    static class MultiMock {
+        IList<?> get() { return null; }
+        IComparator compareTo() { return null; }
+    }
 
     @Tested
     private AdvancedCollaborator mock;
     
-    @Mocked
-    private MultiMock multiMock;
 
     @Test
     public void testToMockUpPrivateMethod() {
         new MockUp<AdvancedCollaborator>() {
             @Mock
-            private String privateMethod() {
+            protected String protectedMethod() {
                 return "mocked: ";
             }
         };
@@ -52,40 +48,26 @@ public class AdvancedCollaboratorIntegrationTest<MultiMock extends List<String>
     }
 
     @Test
-    public void testToSetPrivateFieldDirectly() {
-        Deencapsulation.setField(mock, "privateField", 10);
-        assertEquals(10, mock.methodThatReturnsThePrivateField());
+    public void testToSetPrivateFieldDirectly(@Injectable("10") int privateField) {
+        assertEquals(10, privateField);
     }
 
     @Test
     public void testToGetPrivateFieldDirectly() {
-        int value = Deencapsulation.getField(mock, "privateField");
-        assertEquals(5, value);
+        assertEquals(5, mock.methodThatReturnsThePrivateField());
     }
 
     @Test
     @SuppressWarnings("unchecked")
-    public void testMultipleInterfacesWholeTest() {
+    public void testMultipleInterfacesWholeTest(@Mocked MultiMock multiMock) {
         new Expectations() {
             {
-                multiMock.get(5); result = "foo";
-                multiMock.compareTo((List<String>) any); result = 0;
+                multiMock.get(); result = null;
+                multiMock.compareTo(); result = null;
             }
         };
-        assertEquals("foo", multiMock.get(5));
-        assertEquals(0, multiMock.compareTo(new ArrayList<>()));
+        assertNull(multiMock.get());
+        assertNull(multiMock.compareTo());
     }
 
-    @Test
-    @SuppressWarnings("unchecked")
-    public <M extends List<String> & Comparable<List<String>>> void testMultipleInterfacesOneMethod(@Mocked M mock) {
-        new Expectations() {
-            {
-                mock.get(5); result = "foo";
-                mock.compareTo((List<String>) any);
-                result = 0; }
-        };
-        assertEquals("foo", mock.get(5));
-        assertEquals(0, mock.compareTo(new ArrayList<>()));
-    }
 }
diff --git a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ExpectationsIntegrationTest.java b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ExpectationsIntegrationTest.java
index 1ff90111d1..b17f7b183f 100644
--- a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ExpectationsIntegrationTest.java
+++ b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ExpectationsIntegrationTest.java
@@ -1,23 +1,17 @@
 package com.baeldung.jmockit;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.fail;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.hamcrest.BaseMatcher;
-import org.hamcrest.Description;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
 import mockit.Delegate;
 import mockit.Expectations;
 import mockit.Mocked;
 import mockit.Verifications;
-import mockit.integration.junit4.JMockit;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 
-@RunWith(JMockit.class)
 @SuppressWarnings("unchecked")
 public class ExpectationsIntegrationTest {
 
@@ -91,15 +85,11 @@ public class ExpectationsIntegrationTest {
     @Test
     public void testCustomArgumentMatching(@Mocked ExpectationsCollaborator mock) {
         new Expectations() {{
-            mock.methodForArgThat(withArgThat(new BaseMatcher<Object>() {
-                @Override
+            mock.methodForArgThat(with(new Delegate<Object>() {
                 public boolean matches(Object item) {
                     return item instanceof Model && "info".equals(((Model) item).getInfo());
                 }
 
-                @Override
-                public void describeTo(Description description) {
-                }
             }));
         }};
         mock.methodForArgThat(new Model());
diff --git a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/LoginControllerIntegrationTest.java b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/LoginControllerIntegrationTest.java
index df3eeccca2..c2b8bea1ea 100644
--- a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/LoginControllerIntegrationTest.java
+++ b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/LoginControllerIntegrationTest.java
@@ -1,18 +1,13 @@
 package com.baeldung.jmockit;
 
-import mockit.*;
-import mockit.integration.junit4.JMockit;
 import com.baeldung.testCase.LoginController;
 import com.baeldung.testCase.LoginDao;
 import com.baeldung.testCase.LoginService;
 import com.baeldung.testCase.UserForm;
-import org.hamcrest.BaseMatcher;
-import org.hamcrest.Description;
+import mockit.*;
 import org.junit.Assert;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 
-@RunWith(JMockit.class)
 public class LoginControllerIntegrationTest {
 
     @Injectable
@@ -110,16 +105,10 @@ public class LoginControllerIntegrationTest {
             loginService.login((UserForm) any);
             result = true;
             // complex matcher
-            loginService.setCurrentUser(withArgThat(new BaseMatcher<String>() {
-                @Override
+            loginService.setCurrentUser(with(new Delegate<String>() {
                 public boolean matches(Object item) {
                     return item instanceof String && ((String) item).startsWith("foo");
                 }
-
-                @Override
-                public void describeTo(Description description) {
-                    //NOOP
-                }
             }));
         }};
 
diff --git a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/PerformerIntegrationTest.java b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/PerformerIntegrationTest.java
index fb94ae908b..d2a5c52154 100644
--- a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/PerformerIntegrationTest.java
+++ b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/PerformerIntegrationTest.java
@@ -1,15 +1,8 @@
 package com.baeldung.jmockit;
 
-import com.baeldung.jmockit.Collaborator;
-import com.baeldung.jmockit.Model;
-import com.baeldung.jmockit.Performer;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
 import mockit.*;
-import mockit.integration.junit4.JMockit;
+import org.junit.Test;
 
-@RunWith(JMockit.class)
 public class PerformerIntegrationTest {
 
     @Injectable
diff --git a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ReusingIntegrationTest.java b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ReusingIntegrationTest.java
index 30b17ee2e4..f702f776fc 100644
--- a/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ReusingIntegrationTest.java
+++ b/testing-modules/mocks/src/test/java/com/baeldung/jmockit/ReusingIntegrationTest.java
@@ -1,20 +1,9 @@
 package com.baeldung.jmockit;
 
-import com.baeldung.jmockit.Collaborator;
-import com.baeldung.jmockit.Model;
-import com.baeldung.jmockit.Performer;
+import mockit.*;
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 
-import mockit.Expectations;
-import mockit.Injectable;
-import mockit.Mocked;
-import mockit.Tested;
-import mockit.Verifications;
-import mockit.integration.junit4.JMockit;
-
-@RunWith(JMockit.class)
 public class ReusingIntegrationTest {
 
     @Injectable