Fix PMD issue regarding Ternary operators that can be simplified

src/main/java/org/apache/commons/collections4/iterators/NodeListIterator.java

@@ -67,7 +67,7 @@ public class NodeListIterator implements Iterator<Node> {
 
     @Override
     public boolean hasNext() {
-        return nodeList == null ? false : index < nodeList.getLength();
+        return nodeList != null && index < nodeList.getLength();
     }
 
     @Override

src/main/java/org/apache/commons/collections4/iterators/PeekingIterator.java

@@ -97,7 +97,7 @@ public class PeekingIterator<E> implements Iterator<E> {
         if (exhausted) {
             return false;
         }
-        return slotFilled ? true : iterator.hasNext();
+        return slotFilled || iterator.hasNext();
     }
 
     /**

src/main/java/org/apache/commons/collections4/iterators/PushbackIterator.java

@@ -88,7 +88,7 @@ public class PushbackIterator<E> implements Iterator<E> {
 
     @Override
     public boolean hasNext() {
-        return !items.isEmpty() ? true : iterator.hasNext();
+        return !items.isEmpty() || iterator.hasNext();
     }
 
     @Override

src/main/java/org/apache/commons/collections4/list/AbstractLinkedList.java

@@ -435,7 +435,7 @@ public abstract class AbstractLinkedList<E> implements List<E> {
      * @return true if equal
      */
     protected boolean isEqualValue(final Object value1, final Object value2) {
-        return value1 == value2 || (value1 == null ? false : value1.equals(value2));
+        return value1 == value2 || (value1 != null && value1.equals(value2));
     }
 
     /**

src/main/java/org/apache/commons/collections4/multimap/AbstractMultiValuedMap.java

@@ -461,19 +461,19 @@ public abstract class AbstractMultiValuedMap<K, V> implements MultiValuedMap<K,
         @Override
         public boolean contains(final Object obj) {
             final Collection<V> coll = getMapping();
-            return coll == null ? false : coll.contains(obj);
+            return coll != null && coll.contains(obj);
         }
 
         @Override
         public boolean containsAll(final Collection<?> other) {
             final Collection<V> coll = getMapping();
-            return coll == null ? false : coll.containsAll(other);
+            return coll != null && coll.containsAll(other);
         }
 
         @Override
         public boolean isEmpty() {
             final Collection<V> coll = getMapping();
-            return coll == null ? true : coll.isEmpty();
+            return coll == null || coll.isEmpty();
         }
 
         @Override