[Java] Temporarily suppress serialization warnings on collections to …

…make the build pass on JDK 18-ea.

agrona/src/main/java/org/agrona/collections/BiInt2ObjectMap.java

@@ -28,6 +28,7 @@
  *
  * @param <V> type of the object stored in the map.
  */
+@SuppressWarnings("serial")
 public class BiInt2ObjectMap<V> implements Serializable
 {
     private static final long serialVersionUID = -4306301811303037776L;

agrona/src/main/java/org/agrona/collections/Int2ObjectCache.java

@@ -643,6 +643,7 @@ public void clear()
     /**
      * Collection of values which supports cached iterator to avoid allocation.
      */
+    @SuppressWarnings("serial")
     public final class ValueCollection extends AbstractCollection<V> implements Serializable
     {
         private static final long serialVersionUID = 4345278262685013239L;

agrona/src/main/java/org/agrona/collections/Int2ObjectHashMap.java

@@ -32,6 +32,7 @@
  *
  * @param <V> type of values stored in the {@link java.util.Map}
  */
+@SuppressWarnings("serial")
 public class Int2ObjectHashMap<V>
     implements Map<Integer, V>, Serializable
 {

agrona/src/main/java/org/agrona/collections/MutableReference.java

@@ -23,6 +23,7 @@
  *
  * @param <T> type of the reference.
  */
+@SuppressWarnings("serial")
 public class MutableReference<T> implements Serializable
 {
     private static final long serialVersionUID = 321431528882718691L;

agrona/src/main/java/org/agrona/collections/Object2IntHashMap.java

@@ -31,6 +31,7 @@
  *
  * @param <K> type of keys stored in the {@link java.util.Map}
  */
+@SuppressWarnings("serial")
 public class Object2IntHashMap<K>
     implements Map<K, Integer>, Serializable
 {

agrona/src/main/java/org/agrona/collections/Object2ObjectHashMap.java

@@ -29,6 +29,7 @@
 /**
  * An open-addressing with linear probing hash map, same algorithm as {@link Int2IntHashMap}.
  */
+@SuppressWarnings("serial")
 public class Object2ObjectHashMap<K, V> implements Map<K, V>, Serializable
 {
     static final int MIN_CAPACITY = 8;

agrona/src/main/java/org/agrona/collections/ObjectHashSet.java

@@ -35,6 +35,7 @@
  * @see ObjectIterator
  * @see Set
  */
+@SuppressWarnings("serial")
 public class ObjectHashSet<T> extends AbstractSet<T> implements Serializable
 {
     /**

agrona/src/main/java/org/agrona/collections/UnmodifiableCollectionView.java

@@ -64,6 +64,7 @@ public ReusableIterator iterator()
     /**
      * A stateful reusable iterator.
      */
+    @SuppressWarnings("serial")
     public final class ReusableIterator implements Iterator<V>, Serializable
     {
         private static final long serialVersionUID = 9183617352140354854L;