fix code

hutool-core/src/main/java/cn/hutool/core/net/NetUtil.java

@@ -312,7 +312,7 @@ public class NetUtil {
 			return null;
 		}
 
-		return CollectionUtil.addAll(new ArrayList<NetworkInterface>(), networkInterfaces);
+		return CollectionUtil.addAll(new ArrayList<>(), networkInterfaces);
 	}
 
 	/**
@@ -322,13 +322,7 @@ public class NetUtil {
 	 * @return IP地址列表 {@link LinkedHashSet}
 	 */
 	public static LinkedHashSet<String> localIpv4s() {
-		final LinkedHashSet<InetAddress> localAddressList = localAddressList(new Filter<InetAddress>() {
-
-			@Override
-			public boolean accept(InetAddress t) {
-				return t instanceof Inet4Address;
-			}
-		});
+		final LinkedHashSet<InetAddress> localAddressList = localAddressList(t -> t instanceof Inet4Address);
 
 		return toIpList(localAddressList);
 	}
@@ -341,13 +335,7 @@ public class NetUtil {
 	 * @since 4.5.17
 	 */
 	public static LinkedHashSet<String> localIpv6s() {
-		final LinkedHashSet<InetAddress> localAddressList = localAddressList(new Filter<InetAddress>() {
-
-			@Override
-			public boolean accept(InetAddress t) {
-				return t instanceof Inet6Address;
-			}
-		});
+		final LinkedHashSet<InetAddress> localAddressList = localAddressList(t -> t instanceof Inet6Address);
 
 		return toIpList(localAddressList);
 	}
@@ -448,16 +436,13 @@ public class NetUtil {
 	 * @since 3.0.1
 	 */
 	public static InetAddress getLocalhost() {
-		final LinkedHashSet<InetAddress> localAddressList = localAddressList(new Filter<InetAddress>() {
-			@Override
-			public boolean accept(InetAddress address) {
-				// 非loopback地址，指127.*.*.*的地址
-				return false == address.isLoopbackAddress()
-						// 非地区本地地址，指10.0.0.0 ~ 10.255.255.255、172.16.0.0 ~ 172.31.255.255、192.168.0.0 ~ 192.168.255.255
-						&& false == address.isSiteLocalAddress()
-				// 需为IPV4地址
-						&& address instanceof Inet4Address;
-			}
+		final LinkedHashSet<InetAddress> localAddressList = localAddressList(address -> {
+			// 非loopback地址，指127.*.*.*的地址
+			return false == address.isLoopbackAddress()
+					// 非地区本地地址，指10.0.0.0 ~ 10.255.255.255、172.16.0.0 ~ 172.31.255.255、192.168.0.0 ~ 192.168.255.255
+					&& false == address.isSiteLocalAddress()
+			// 需为IPV4地址
+					&& address instanceof Inet4Address;
 		});
 
 		if (CollUtil.isNotEmpty(localAddressList)) {