Add UncheckedIllegalAccessException.

src/changes/changes.xml

@@ -94,6 +94,7 @@ The <action> type attribute can be add,update,fix,remove.
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add ComparableUtils.max(A, A) and ComparableUtils.min(A, A).</action>
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add UncheckedReflectiveOperationException.</action>
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add and use ClassUtils.isPublic(Class).</action>
+    <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add UncheckedIllegalAccessException.</action>
     <!-- UPDATE -->
     <action                   type="update" dev="ggregory" due-to="Dependabot, Gary Gregory">Bump spotbugs-maven-plugin from 4.2.0 to 4.4.2.2 #735, #808, #822.</action>
     <action                   type="update" dev="ggregory" due-to="Dependabot, XenoAmess">Bump Bump actions/cache from v2.1.4 to v2.1.6 #742, #752, #764.</action>

src/main/java/org/apache/commons/lang3/exception/UncheckedIllegalAccessException.java

@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.lang3.exception;
+
+/**
+ * Unchecked {@link IllegalAccessException}.
+ *
+ * @since 3.13.0
+ */
+public class UncheckedIllegalAccessException extends UncheckedReflectiveOperationException {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * Constructs an instance initialized to the given {@code cause}.
+     *
+     * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method). (A @{code null} value
+     *        is permitted, and indicates that the cause is nonexistent or unknown.)
+     */
+    public UncheckedIllegalAccessException(Throwable cause) {
+        super(cause);
+    }
+
+}

src/test/java/org/apache/commons/lang3/exception/UncheckedIllegalAccessExceptionTest.java

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.lang3.exception;
+
+import static org.junit.jupiter.api.Assertions.assertSame;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Tests {@link UncheckedIllegalAccessException}.
+ */
+public class UncheckedIllegalAccessExceptionTest {
+
+    @Test
+    public void testConstructWithCause() {
+        final Exception e = new Exception();
+        assertSame(e, new UncheckedIllegalAccessException(e).getCause());
+    }
+
+}