diff --git a/hutool-core/src/main/java/cn/hutool/core/img/BackgroundRemoval.java b/hutool-core/src/main/java/cn/hutool/core/img/BackgroundRemoval.java
index 92c43f666..a29dc645e 100755
--- a/hutool-core/src/main/java/cn/hutool/core/img/BackgroundRemoval.java
+++ b/hutool-core/src/main/java/cn/hutool/core/img/BackgroundRemoval.java
@@ -299,7 +299,8 @@ public class BackgroundRemoval {
 			}
 		}
 
-		Map<String, Integer> map = new HashMap<>(list.size());
+		int initialCapacity =  (int) ((float) list.size() / 0.75F + 1.0F);
+		Map<String, Integer> map = new HashMap<>(initialCapacity);
 		for (String string : list) {
 			Integer integer = map.get(string);
 			if (integer == null) {
@@ -351,4 +352,4 @@ public class BackgroundRemoval {
 		}
 		return false;
 	}
-}
\ No newline at end of file
+}
diff --git a/hutool-core/src/main/java/cn/hutool/core/net/NetUtil.java b/hutool-core/src/main/java/cn/hutool/core/net/NetUtil.java
index 1877191fb..c05b64fbf 100755
--- a/hutool-core/src/main/java/cn/hutool/core/net/NetUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/net/NetUtil.java
@@ -90,7 +90,7 @@ public class NetUtil {
 	 * @return 大整数, 如发生异常返回 null
 	 * @since 5.5.7
 	 */
-	public static BigInteger ipv6ToBitInteger(String IPv6Str) {
+	public static BigInteger ipv6ToBigInteger(String IPv6Str) {
 		try {
 			InetAddress address = InetAddress.getByName(IPv6Str);
 			if (address instanceof Inet6Address) {