Add some methods from ArrayList

gradle.properties

@@ -1,2 +1,2 @@
-version=1.5
+version=1.6
 release=false

src/main/java/com/dselent/bigarraylist/BigArrayList.java

@@ -22,6 +22,7 @@
 import java.io.IOException;
 import java.io.Serializable;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Comparator;
 import java.util.Iterator;
 import java.util.List;
@@ -1001,8 +1002,7 @@ public E set(long index, E element) {
 	 * @return The new element at the specified index
 	 */
 	public E set(int index, E element) {
-		long longIndex = index;
-		return set(longIndex, element);
+		return set((long)index, element);
 	}
 
 	/**
@@ -1011,49 +1011,36 @@ public E set(int index, E element) {
 	 * @return True is the list is empty, false otherwise
 	 */
 	public boolean isEmpty() {
-		boolean empty = true;
-
-		if (size() > 0) {
-			empty = false;
-		}
-
-		return empty;
+		return wholeListSize == 0;
 	}
 
 	//hashCode cannot be implemented correctly due to contents being on disk and out of sight from memory
 
-	/* (non-Javadoc)
-	 * @see java.lang.Object#equals(java.lang.Object)
-	 */
-	@SuppressWarnings("rawtypes")
 	@Override
 	public boolean equals(Object otherObject) {
 
-		boolean isEqual = true;
-
-		if (otherObject == null) {
-			isEqual = false;
-		} else if (this == otherObject) {
-			isEqual = true;
-		} else if (!(otherObject instanceof BigArrayList)) {
-			isEqual = false;
-		} else {
-			BigArrayList otherBigArrayList = (BigArrayList) otherObject;
-
-			if (wholeListSize != otherBigArrayList.size()) {
-				isEqual = false;
-			} else if (liveObject != otherBigArrayList.isLive()) {
-				isEqual = false;
-			} else {
-				for (long i = 0; i < wholeListSize && isEqual; i++) {
-					if (!get(i).equals(otherBigArrayList.get(i))) {
-						isEqual = false;
-					}
-				}
-			}
+		if (!(otherObject instanceof BigArrayList)) {
+			return super.equals(otherObject);
 		}
+
+		BigArrayList<?> otherBigArrayList = (BigArrayList<?>) otherObject;
 
-		return isEqual;
+		if (wholeListSize != otherBigArrayList.size()) {
+			return false;
+		}
+		if (liveObject != otherBigArrayList.isLive()) {
+			return false;
+		}
+
+        Iterator<E> thisIterator = this.iterator();
+        Iterator<?> otherIterator = otherBigArrayList.iterator();
+        while (thisIterator.hasNext() && otherIterator.hasNext()) {
+            E o1 = thisIterator.next();
+            Object o2 = otherIterator.next();
+            if (!(o1==null ? o2==null : o1.equals(o2)))
+                return false;
+		}
+        return !(thisIterator.hasNext() || otherIterator.hasNext());
 	}
 
 	@Override
@@ -1078,4 +1065,33 @@ public E next() {
 			}
 		};
 	}
+
+	/**
+	 * @param other The other BigArrayList
+	 * @see ArrayList#addAll(Collection)
+	 */
+	public void addAll(BigArrayList<? extends E> other) {
+		for (E element : other) {
+			add(element);
+		}
+	}
+
+	/**
+	 * @param other The other collection
+	 * @see ArrayList#addAll(Collection)
+	 */
+	public void addAll(Collection<? extends E> other) {
+		for (E element : other) {
+			add(element);
+		}
+	}
+
+	/**
+	 * Clears all elements without clearing the memory
+	 */
+	public void clear() {
+		for (long i = wholeListSize-1; i >= 0; i--) {
+			remove(i);
+		}
+	}
 }

src/main/java/com/dselent/bigarraylist/CacheMapping.java

@@ -499,4 +499,4 @@ protected void clearMemory() throws IOException
 	{
 		fileAccessor.clearMemory();
 	}
-}
+}

src/main/java/com/dselent/bigarraylist/FileAccessor.java

@@ -368,9 +368,6 @@ protected void clearMemory() throws IOException
 				}
 			}
 		}
-
 		//don't delete the folder, other things may be using it
-
 	}
-
-}
+}