No need to allocate empty Comparator arrays over and over.
MODIFY
src/main/java/org/apache/commons/io/comparator/CompositeFileComparator.java
src/main/java/org/apache/commons/io/comparator/CompositeFileComparator.java
*/
public class CompositeFileComparator extends AbstractFileComparator implements Serializable {
+ private static final Comparator<?>[] EMPTY_COMPARATOR_ARRAY = new Comparator<?>[0];
private static final long serialVersionUID = -2224170307287243428L;
private static final Comparator<?>[] NO_COMPARATORS = {};
private final Comparator<File>[] delegates;
@@ -76,7 +77,7 @@ public CompositeFileComparator(final Iterable<Comparator<File>> delegates) {
for (final Comparator<File> comparator : delegates) {
list.add(comparator);
}
- this.delegates = (Comparator<File>[]) list.toArray(new Comparator<?>[0]); //2
+ this.delegates = (Comparator<File>[]) list.toArray(EMPTY_COMPARATOR_ARRAY); //2
}
}

No need to allocate empty Comparator arrays over and over.