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SaurabhjavaSaurabhjava
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RestWithException and Unit Test
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‎SpringRestWithExceptionHandling/src/main/java/org/cg/ServletInitializer.java‎

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package org.cg;
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import org.springframework.boot.builder.SpringApplicationBuilder;
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import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
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public class ServletInitializer extends SpringBootServletInitializer {
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@Override
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protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
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return application.sources(StudentWebProjectApplication.class);
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}
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/StudentWebProjectApplication.java‎

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package org.cg;
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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 StudentWebProjectApplication {
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public static void main(String[] args) {
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SpringApplication.run(StudentWebProjectApplication.class, args);
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}
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/controller/StudentController.java‎

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package org.cg.controller;
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import java.util.List;
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import org.cg.exception.StudentNotFoundException;
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import org.cg.model.Student;
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import org.cg.service.StudentService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpStatus;
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import org.springframework.web.bind.annotation.ExceptionHandler;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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@RestController
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@RequestMapping("student")
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public class StudentController {
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@Autowired
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StudentService sService;
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@GetMapping
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public List<Student> printAllStudent() {
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return sService.getAllStudent();
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}
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@PostMapping
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public List<Student> saveStudent(@RequestBody Student obj) {
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return sService.createStudent(obj);
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}
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@GetMapping("/name/{name}")
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public List<Student> printAllStudentByName(@PathVariable String name) {
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return sService.getStudentByName(name);
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}
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@GetMapping("/{sid}")
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public Student findStudent(@PathVariable int sid) throws StudentNotFoundException{
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Student s=null;
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try {
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s=sService.getStudentByID(sid);
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}
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catch(Exception e) {
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throw new StudentNotFoundException("Student with given id is not available!");
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}
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return s;
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}
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}
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‎SpringRestWithExceptionHandling/src/main/java/org/cg/dao/StudentDao.java‎

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package org.cg.dao;
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import java.util.List;
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import org.cg.model.Student;
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public interface StudentDao {
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/*public List<Student> createStudent(Student stu);
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public List<Student> getAllStudent();*/
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public List<Student> getStudentByName(String name);
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/dao/StudentDaoImpl.java‎

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package org.cg.dao;
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import java.util.List;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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import javax.persistence.TypedQuery;
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import org.cg.model.Student;
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import org.springframework.stereotype.Repository;
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import org.springframework.transaction.annotation.Transactional;
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@Repository
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@Transactional
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public class StudentDaoImpl implements StudentDao{
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@PersistenceContext
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EntityManager em;
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/*@Override
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public List<Student> createStudent(Student stu) {
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em.persist(stu);
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return getAllStudent();
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}
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@Override
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public List<Student> getAllStudent() {
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TypedQuery<Student> q=em.createQuery("select s from Student s",Student.class);
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return q.getResultList();
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}*/
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@Override
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public List<Student> getStudentByName(String name) {
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TypedQuery<Student> q=em.createQuery("select s from Student s where s.name like :n",Student.class);
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q.setParameter("n", name+"%");
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return q.getResultList();
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}
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/dao/StudentRepository.java‎

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package org.cg.dao;
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import org.cg.model.Student;
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import org.springframework.data.jpa.repository.JpaRepository;
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import org.springframework.stereotype.Repository;
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@Repository
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public interface StudentRepository extends StudentDao,JpaRepository<Student, Integer>{
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/exception/DemoException.java‎

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package org.cg.exception;
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import java.util.Date;
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import javax.servlet.http.HttpServletRequest;
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import org.springframework.http.HttpStatus;
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import org.springframework.web.bind.annotation.ControllerAdvice;
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import org.springframework.web.bind.annotation.ExceptionHandler;
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import org.springframework.web.bind.annotation.ResponseBody;
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import org.springframework.web.bind.annotation.ResponseStatus;
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@ControllerAdvice
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public class DemoException {
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@ResponseBody
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@ResponseStatus(value=HttpStatus.NOT_FOUND)
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@ExceptionHandler({Exception.class})
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public ErrorMapper handleConflict(Exception ex, HttpServletRequest req) {
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String msg=ex.getMessage();
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String uri=req.getRequestURL().toString();
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return new ErrorMapper(uri, msg, new Date());
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}
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/exception/ErrorMapper.java‎

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package org.cg.exception;
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import java.util.Date;
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public class ErrorMapper {
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private String url;
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private String message;
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private Date now;
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public ErrorMapper(String url, String message, Date now) {
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super();
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this.url = url;
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this.message = message;
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this.now=now;
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}
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public String getUrl() {
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return url;
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}
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public void setUrl(String url) {
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this.url = url;
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}
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public String getMessage() {
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return message;
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}
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public void setMessage(String message) {
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this.message = message;
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}
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public Date getNow() {
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return now;
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}
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public void setNow(Date now) {
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this.now = now;
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}
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/exception/StudentNotFoundException.java‎

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package org.cg.exception;
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public class StudentNotFoundException extends Exception{
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public StudentNotFoundException() {
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}
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public StudentNotFoundException(String message) {
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super(message);
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}
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}

‎SpringRestWithExceptionHandling/src/main/java/org/cg/model/Address.java‎

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package org.cg.model;
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import javax.persistence.Entity;
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import javax.persistence.Id;
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@Entity
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public class Address {
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@Id
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private int aid;
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private String city;
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private String country;
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public Address() {
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}
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public Address(int aid, String city, String country) {
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super();
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this.aid = aid;
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this.city = city;
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this.country = country;
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}
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public int getAid() {
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return aid;
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}
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public void setAid(int aid) {
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this.aid = aid;
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}
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public String getCity() {
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return city;
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}
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public void setCity(String city) {
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this.city = city;
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}
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public String getCountry() {
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return country;
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}
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public void setCountry(String country) {
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this.country = country;
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}
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}

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