optimize code, add interfaces

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

@@ -2,10 +2,8 @@ package com.faf223.expensetrackerfaf.model;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import jakarta.persistence.*;
-import lombok.AllArgsConstructor;
-import lombok.Data;
-import lombok.ToString;
-import lombok.NoArgsConstructor;
+import lombok.*;
+
 import java.math.BigDecimal;
 import java.time.LocalDate;
 
@@ -16,6 +14,7 @@ import java.time.LocalDate;
 public class Income implements IMoneyTransaction {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Getter(AccessLevel.NONE)
     private Long incomeId;
 
     @ManyToOne
@@ -30,4 +29,9 @@ public class Income implements IMoneyTransaction {
 
     private LocalDate date;
     private BigDecimal amount;
+
+    @Override
+    public Long getId() {
+        return incomeId;
+    }
 }