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‎pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>3.3.4</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>com.javatechie</groupId>
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<artifactId>budget-buddy</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>budget-buddy</name>
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<description>Demo project for Spring Boot</description>
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<url/>
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<licenses>
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<license/>
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</licenses>
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<developers>
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<developer/>
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</developers>
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<scm>
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<connection/>
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<developerConnection/>
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<tag/>
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<url/>
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</scm>
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<properties>
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<java.version>21</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>gg.jte</groupId>
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<artifactId>jte</artifactId>
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<version>3.1.12</version>
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</dependency>
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<dependency>
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<groupId>gg.jte</groupId>
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<artifactId>jte-spring-boot-starter-3</artifactId>
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<version>3.1.12</version>
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</dependency>
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<dependency>
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<groupId>com.mysql</groupId>
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<artifactId>mysql-connector-j</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>gg.jte</groupId>
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<artifactId>jte-maven-plugin</artifactId>
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<version>3.1.12</version>
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<executions>
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<execution>
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<id>jte-generate</id>
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<phase>generate-sources</phase>
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<goals>
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<goal>generate</goal>
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</goals>
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<configuration>
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<sourceDirectory>${project.basedir}/src/main/jte</sourceDirectory>
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<contentType>Html</contentType>
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<binaryStaticContent>true</binaryStaticContent>
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<targetResourceDirectory>${project.build.outputDirectory}</targetResourceDirectory>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<configuration>
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<excludes>
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<exclude>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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</exclude>
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</excludes>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/main/java/com/javatechie/BudgetBuddyApplication.java

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package com.javatechie;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class BudgetBuddyApplication {
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public static void main(String[] args) {
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SpringApplication.run(BudgetBuddyApplication.class, args);
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}
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}

‎src/main/java/com/javatechie/controller/ExpenseController.java

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package com.javatechie.controller;
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import com.javatechie.entity.Expense;
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import com.javatechie.service.ExpenseService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
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import org.springframework.web.bind.annotation.*;
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@Controller
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@RequestMapping("/")
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public class ExpenseController {
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@Autowired
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private ExpenseService expenseService;
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// Display the main page
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@GetMapping
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public String index(Model model) {
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model.addAttribute("expenses", expenseService.getAllExpenses());
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model.addAttribute("expense", new Expense()); // For adding a new expense
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return "index";
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}
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// Add or update an expense
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@PostMapping("/save")
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public String saveExpense(@ModelAttribute Expense expense) {
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if (expense.getId() != null) {
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// Update existing expense
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Expense existingExpense = expenseService.getExpenseById(expense.getId());
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if (existingExpense != null) {
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existingExpense.setDescription(expense.getDescription());
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existingExpense.setAmount(expense.getAmount());
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existingExpense.setDate(expense.getDate());
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existingExpense.setCategory(expense.getCategory());
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expenseService.saveExpense(existingExpense);
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}
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} else {
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// Add new expense
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expenseService.saveExpense(expense);
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}
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return "redirect:/";
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}
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// Display form to edit an existing expense
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@GetMapping("/edit/{id}")
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public String editForm(@PathVariable Long id, Model model) {
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Expense expense = expenseService.getExpenseById(id);
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if (expense != null) {
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model.addAttribute("expense", expense); // Populate the model with the existing expense
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} else {
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model.addAttribute("expense", new Expense()); // Fallback to a new expense if not found
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}
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model.addAttribute("expenses", expenseService.getAllExpenses()); // List of all expenses
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return "index"; // Return the same index page with the form populated for editing
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}
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// Delete an expense
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@GetMapping("/delete/{id}")
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public String deleteExpense(@PathVariable Long id) {
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expenseService.deleteExpense(id);
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return "redirect:/";
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}
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}

‎src/main/java/com/javatechie/entity/Expense.java

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package com.javatechie.entity;
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import jakarta.persistence.*;
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import lombok.AllArgsConstructor;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import java.time.LocalDate;
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@Entity
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@Data
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@AllArgsConstructor
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@NoArgsConstructor
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public class Expense {
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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public Long id; // Unique identifier for the expense
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public String description; // Description of the expense
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public double amount; // Amount spent
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public String date; // Date of the expense
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public String category; // Category of the expense (e.g., Food, Transport, etc.)
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// public String paymentMethod; // Payment method (e.g., Cash, Credit Card)
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}

‎src/main/java/com/javatechie/respository/ExpenseRepository.java

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package com.javatechie.respository;
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import com.javatechie.entity.Expense;
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import org.springframework.data.jpa.repository.JpaRepository;
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public interface ExpenseRepository extends JpaRepository<Expense,Long> {
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}

‎src/main/java/com/javatechie/service/ExpenseService.java

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package com.javatechie.service;
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import com.javatechie.entity.Expense;
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import com.javatechie.respository.ExpenseRepository;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.util.List;
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@Service
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public class ExpenseService {
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@Autowired
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private ExpenseRepository expenseRepository;
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public List<Expense> getAllExpenses() {
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return expenseRepository.findAll();
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}
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public Expense saveExpense(Expense expense) {
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return expenseRepository.save(expense);
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}
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public void deleteExpense(Long id) {
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expenseRepository.deleteById(id);
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}
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public Expense getExpenseById(Long id) {
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return expenseRepository.findById(id).orElse(null);
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}
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}

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