几个小优化:

1.优化CollUtil.map()方法, 减少流中的无意义操作;
2.优化ArrayUtil.get()方法, 使用合理的逻辑判断 代替 使用异常判断null值;

hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java

@@ -1066,12 +1066,17 @@ public class CollUtil {
 	 * @since 5.3.5
 	 */
 	public static <T, R> List<R> map(final Iterable<T> collection, final Function<? super T, ? extends R> mapper, final boolean ignoreNull) {
+		if (ignoreNull) {
+			return StreamUtil.of(collection)
+					// 检查映射前的结果
+					.filter(Objects::nonNull)
+					.map(mapper)
+					// 检查映射后的结果
+					.filter(Objects::nonNull)
+					.collect(Collectors.toList());
+		}
 		return StreamUtil.of(collection)
-				// 检查映射前的结果
-				.filter((e) -> (false == ignoreNull) || null != e)
 				.map(mapper)
-				// 检查映射后的结果
-				.filter((e) -> (false == ignoreNull) || null != e)
 				.collect(Collectors.toList());
 	}
 

hutool-core/src/main/java/cn/hutool/core/collection/ListUtil.java

@@ -433,7 +433,7 @@ public class ListUtil {
 	 * @param element 新元素
 	 * @param paddingElement 填充的值
 	 * @return 原List
-	 * @since 5。8.4
+	 * @since 5.8.4
 	 */
 	public static <T> List<T> setOrPadding(final List<T> list, final int index, final T element, final T paddingElement) {
 		Assert.notNull(list, "List must be not null !");

hutool-core/src/main/java/cn/hutool/core/util/ArrayUtil.java

@@ -1036,15 +1036,14 @@ public class ArrayUtil extends PrimitiveArrayUtil {
 		if (null == array) {
 			return null;
 		}
-
+		final int length = Array.getLength(array);
 		if (index < 0) {
-			index += Array.getLength(array);
+			index += length;
 		}
-		try {
-			return (T) Array.get(array, index);
-		} catch (final ArrayIndexOutOfBoundsException e) {
+		if (index < 0 || index >= length) {
 			return null;
 		}
+		return (T) Array.get(array, index);
 	}
 
 	/**

hutool-core/src/test/java/cn/hutool/core/map/GraphTest.java

@@ -147,7 +147,7 @@ public class GraphTest {
 		Assert.assertEquals(asSet(2, 0), graph.getAdjacentPoints(3));
 	}
 
-
+	@SafeVarargs
 	private static <T> Set<T> asSet(T... ts) {
 		return new LinkedHashSet<>(Arrays.asList(ts));
 	}