@PutMapping

spring-rest-api/src/main/java/com/ahmetyagiz/controller/RestEmployeeController.java

@@ -8,12 +8,14 @@
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 import com.ahmetyagiz.model.Employee;
+import com.ahmetyagiz.model.UpdateEmployeeRequest;
 import com.ahmetyagiz.services.EmployeeService;
 
 @RestController
@@ -48,5 +50,14 @@ public Employee saveEmployee(@RequestBody Employee newEmployee) {
 	public boolean deleteEmployee(@PathVariable(name = "id") String id) {
 		return employeeService.deleteEmployee(id);
 	}
+
+	@PutMapping(path = "/update-employee/{id}")
+	public Employee updateEmployee(@PathVariable(name = "id") String id, @RequestBody UpdateEmployeeRequest request) {
+		return employeeService.updateEmployee(id, request);
+	}
 }
 
+
+
+
+

spring-rest-api/src/main/java/com/ahmetyagiz/model/UpdateEmployeeRequest.java

@@ -0,0 +1,13 @@
+package com.ahmetyagiz.model;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class UpdateEmployeeRequest {
+
+	private String firstName;
+
+	private String lastName;
+}

spring-rest-api/src/main/java/com/ahmetyagiz/repository/EmployeeRepository.java

@@ -7,6 +7,7 @@
 import org.springframework.stereotype.Repository;
 
 import com.ahmetyagiz.model.Employee;
+import com.ahmetyagiz.model.UpdateEmployeeRequest;
 
 @Repository
 public class EmployeeRepository {
@@ -74,12 +75,41 @@ public boolean deleteEmployee(String id) {
 			}
 		}	
 
-		if(deleteEmployee == null) {
-			return false;
+		if(deleteEmployee != null) {
+			employeeList.remove(deleteEmployee);
+			return true;
 		}
 
-		employeeList.remove(deleteEmployee);
-		return true;
+		return false;
+	}
+
+	public Employee findEmployeeById(String id) {
+		Employee findEmployee = null;
+		for (Employee employee : employeeList) {
+			if(employee.getId().equals(id)){
+				findEmployee = employee;
+				break;
+			}
+		}
+		return findEmployee;
+	}
+
+	public Employee updateEmployee(String id, UpdateEmployeeRequest request) {
+
+		Employee findEmployee = findEmployeeById(id);
+
+		if(findEmployee != null){
+			deleteEmployee(id);
+
+			Employee updatedEmployee = new Employee();
+			updatedEmployee.setId(id);
+			updatedEmployee.setFirstName(request.getFirstName());
+			updatedEmployee.setLastName(request.getLastName());
+
+			employeeList.add(updatedEmployee);
+			return updatedEmployee;
+		}
+		return null;
 	}
 }
 

spring-rest-api/src/main/java/com/ahmetyagiz/services/EmployeeService.java

@@ -6,6 +6,7 @@
 import org.springframework.stereotype.Service;
 
 import com.ahmetyagiz.model.Employee;
+import com.ahmetyagiz.model.UpdateEmployeeRequest;
 import com.ahmetyagiz.repository.EmployeeRepository;
 
 @Service
@@ -33,4 +34,8 @@ public Employee saveEmployee(Employee newEmployee) {
 	public boolean deleteEmployee(String id) {
 		return employeeRepository.deleteEmployee(id);
 	}
+
+	public Employee updateEmployee(String firstName, UpdateEmployeeRequest request) {
+		return employeeRepository.updateEmployee(firstName, request);
+	}
 }