Added some dependencies

pom.xml

@@ -47,6 +47,11 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
 	</dependencies>
 
 	<build>

src/main/java/com/example/postgresdemo/PostgresDemoApplication.java

@@ -2,10 +2,16 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.annotation.ComponentScan;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 
 @SpringBootApplication
 @EnableJpaAuditing
+@EntityScan(basePackages = "com.example.postgresdemo")
+@ComponentScan(basePackages = "com.example.postgresdemo")
+@EnableJpaRepositories(basePackages = "com.example.postgresdemo")
 public class PostgresDemoApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(PostgresDemoApplication.class, args);

src/main/java/com/example/postgresdemo/controller/AnswerController.java

@@ -20,12 +20,12 @@ public class AnswerController {
     private QuestionRepository questionRepository;
 
     @GetMapping("/questions/{questionId}/answers")
-    public List<Answer> getAnswersByQuestionId(@PathVariable Long questionId) {
+    public List<Answer> getAnswersByQuestionId(@PathVariable(value = "questionId") Long questionId) {
         return answerRepository.findByQuestionId(questionId);
     }
 
     @PostMapping("/questions/{questionId}/answers")
-    public Answer addAnswer(@PathVariable Long questionId,
+    public Answer addAnswer(@PathVariable(value = "questionId") Long questionId,
                             @Valid @RequestBody Answer answer) {
         return questionRepository.findById(questionId)
                 .map(question -> {

src/main/java/com/example/postgresdemo/controller/QuestionController.java

@@ -11,23 +11,24 @@
 import javax.validation.Valid;
 
 @RestController
+@RequestMapping("/questions")
 public class QuestionController {
 
     @Autowired
     private QuestionRepository questionRepository;
 
-    @GetMapping("/questions")
+    @GetMapping("/list")
     public Page<Question> getQuestions(Pageable pageable) {
         return questionRepository.findAll(pageable);
     }
 
 
-    @PostMapping("/questions")
+    @PostMapping("/create")
     public Question createQuestion(@Valid @RequestBody Question question) {
         return questionRepository.save(question);
     }
 
-    @PutMapping("/questions/{questionId}")
+    @PutMapping("/{questionId}")
     public Question updateQuestion(@PathVariable Long questionId,
                                    @Valid @RequestBody Question questionRequest) {
         return questionRepository.findById(questionId)
@@ -39,10 +40,10 @@ public Question updateQuestion(@PathVariable Long questionId,
     }
 
 
-    @DeleteMapping("/questions/{questionId}")
+    @DeleteMapping("/{questionId}")
     public ResponseEntity<?> deleteQuestion(@PathVariable Long questionId) {
         return questionRepository.findById(questionId)
-                .map(question -> {
+                   .map(question -> {
                     questionRepository.delete(question);
                     return ResponseEntity.ok().build();
                 }).orElseThrow(() -> new ResourceNotFoundException("Question not found with id " + questionId));

src/main/java/com/example/postgresdemo/model/Answer.java

@@ -1,13 +1,23 @@
 package com.example.postgresdemo.model;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
 import org.hibernate.annotations.OnDelete;
 import org.hibernate.annotations.OnDeleteAction;
 
 import javax.persistence.*;
 
 @Entity
 @Table(name = "answers")
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
 public class Answer extends AuditModel {
     @Id
     @GeneratedValue(generator = "answer_generator")
@@ -27,27 +37,5 @@ public class Answer extends AuditModel {
     @JsonIgnore
     private Question question;
 
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getText() {
-        return text;
-    }
-
-    public void setText(String text) {
-        this.text = text;
-    }
-
-    public Question getQuestion() {
-        return question;
-    }
-
-    public void setQuestion(Question question) {
-        this.question = question;
-    }
+
 }

src/main/java/com/example/postgresdemo/model/AuditModel.java

@@ -1,13 +1,18 @@
 package com.example.postgresdemo.model;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+import lombok.Getter;
+import lombok.Setter;
+
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.annotation.LastModifiedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
 import javax.persistence.*;
 import java.io.Serializable;
 import java.util.Date;
-
+@Getter
+@Setter
 @MappedSuperclass
 @EntityListeners(AuditingEntityListener.class)
 @JsonIgnoreProperties(
@@ -25,19 +30,5 @@ public abstract class AuditModel implements Serializable {
     @LastModifiedDate
     private Date updatedAt;
 
-    public Date getCreatedAt() {
-        return createdAt;
-    }
-
-    public void setCreatedAt(Date createdAt) {
-        this.createdAt = createdAt;
-    }
-
-    public Date getUpdatedAt() {
-        return updatedAt;
-    }
-
-    public void setUpdatedAt(Date updatedAt) {
-        this.updatedAt = updatedAt;
-    }
+
 }

src/main/java/com/example/postgresdemo/model/Question.java

@@ -4,8 +4,17 @@
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.Size;
 
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
 @Entity
 @Table(name = "questions")
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
 public class Question extends AuditModel {
     @Id
     @GeneratedValue(generator = "question_generator")
@@ -23,27 +32,4 @@ public class Question extends AuditModel {
     @Column(columnDefinition = "text")
     private String description;
 
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getTitle() {
-        return title;
-    }
-
-    public void setTitle(String title) {
-        this.title = title;
-    }
-
-    public String getDescription() {
-        return description;
-    }
-
-    public void setDescription(String description) {
-        this.description = description;
-    }
 }

src/main/java/com/example/postgresdemo/repository/AnswerRepository.java

@@ -7,5 +7,6 @@
 
 @Repository
 public interface AnswerRepository extends JpaRepository<Answer, Long> {
-    List<Answer> findByQuestionId(Long questionId);
+
+	List<Answer> findByQuestionId(Long questionId);
 }

src/main/java/com/example/postgresdemo/repository/QuestionRepository.java

@@ -6,4 +6,5 @@
 
 @Repository
 public interface QuestionRepository extends JpaRepository<Question, Long> {
+
 }

src/main/resources/application.properties

@@ -1,10 +1,21 @@
 ## Spring DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
-spring.datasource.url=jdbc:postgresql://localhost:5432/postgres_demo
-spring.datasource.username= postgres
-spring.datasource.password=
+spring.datasource.url=jdbc:postgresql://localhost:5432/postgres
+
+spring.datasource.password=1
 
 # The SQL dialect makes Hibernate generate better SQL for the chosen database
 spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
 
 # Hibernate ddl auto (create, create-drop, validate, update)
-spring.jpa.hibernate.ddl-auto = update
+spring.jpa.hibernate.ddl-auto = create
+
+
+spring.application.name=postgres-demo
+
+
+spring.datasource.username=postgres
+spring.jpa.properties.hibernate.default_schema=posgresdemo
+
+
+spring.jpa.show-sql=true
+spring.jpa.properties.hibernate.format_sql=true