done checkstyle

src/main/java/core/basesyntax/HelloWorld.java

@@ -1,7 +1,7 @@
 package core.basesyntax;
 
-import core.basesyntax.models.Cat;
-import core.basesyntax.models.Dog;
+import core.basesyntax.modelss.Cat;
+import core.basesyntax.modelss.Dog;
 import java.time.LocalDate;
 
 public class HelloWorld {

src/main/java/core/basesyntax/modelss/Cat.java

@@ -0,0 +1,16 @@
+package core.basesyntax.modelss;
+
+public class Cat {
+    private int age;
+    private String name;
+    private String ownerName;
+
+    @Override
+    public String toString() {
+        return "Cat{"
+                + "age=" + age
+                + ", name='" + name + '\''
+                + ", ownerName='" + ownerName + '\''
+                + '}';
+    }
+}

src/main/java/core/basesyntax/modelss/Dog.java

@@ -0,0 +1,4 @@
+package core.basesyntax.modelss;
+
+public class Dog {
+}