diff --git a/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/IpUtils.java b/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/IpUtils.java
index f053a2ec..223fc6aa 100644
--- a/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/IpUtils.java
+++ b/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/IpUtils.java
@@ -10,7 +10,10 @@ import javax.servlet.http.HttpServletRequest;
  *
  * @author Hccake
  */
-public class IpUtils {
+public final class IpUtils {
+
+	private IpUtils() {
+	}
 
 	/**
 	 * 如果在前端和服务端中间还有一层Node服务 在Node对前端数据进行处理并发起新请求时，需携带此头部信息 便于获取真实IP
diff --git a/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/JsonUtils.java b/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/JsonUtils.java
index 4c50a32c..3429364c 100644
--- a/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/JsonUtils.java
+++ b/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/JsonUtils.java
@@ -9,7 +9,10 @@ import java.lang.reflect.Type;
 /**
  * @author lingting 2021/2/25 20:38
  */
-public class JsonUtils {
+public final class JsonUtils {
+
+	private JsonUtils() {
+	}
 
 	@Getter
 	private static JsonTool jsonTool;
diff --git a/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/PasswordUtils.java b/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/PasswordUtils.java
index 57219dc9..49bd63da 100644
--- a/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/PasswordUtils.java
+++ b/ballcat-common/ballcat-common-util/src/main/java/com/hccake/ballcat/common/util/PasswordUtils.java
@@ -17,7 +17,10 @@ import java.nio.charset.StandardCharsets;
  * @version 1.0
  * @date 2019/9/25 15:14
  */
-public class PasswordUtils {
+public final class PasswordUtils {
+
+	private PasswordUtils() {
+	}
 
 	public static final PasswordEncoder ENCODER = new BCryptPasswordEncoder();