optimize code, add interfaces

src/main/java/com/faf223/expensetrackerfaf/model/Credential.java

@@ -1,35 +1,35 @@
-    package com.faf223.expensetrackerfaf.model;
+package com.faf223.expensetrackerfaf.model;
 
-    import jakarta.persistence.*;
-    import lombok.AllArgsConstructor;
-    import lombok.Data;
-    import lombok.NoArgsConstructor;
+import jakarta.persistence.*;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
 
-    @Data
-    @Entity(name = "credentials")
-    @NoArgsConstructor
-    @AllArgsConstructor
-    public class Credential {
-        @Id
-        @GeneratedValue(strategy = GenerationType.IDENTITY)
-        private Long credentialId;
+@Data
+@Entity(name = "credentials")
+@NoArgsConstructor
+@AllArgsConstructor
+public class Credential {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long credentialId;
 
-        @ManyToOne
-        @JoinColumn(name = "user_uuid")
-        private User user;
+    @ManyToOne
+    @JoinColumn(name = "user_uuid")
+    private User user;
 
-        private String email;
-        private String password;
+    private String email;
+    private String password;
 
-        @Enumerated(EnumType.STRING)
-        private Role role;
+    @Enumerated(EnumType.STRING)
+    private Role role;
 
-        public Credential(User user, String email, String password) {
-            this.user = user;
-            this.email = email;
-            this.password = password;
+    public Credential(User user, String email, String password) {
+        this.user = user;
+        this.email = email;
+        this.password = password;
 
-            this.role = Role.ROLE_USER;
-        }
+        this.role = Role.ROLE_USER;
     }
+}