implementation for list of all jibbers and single jibber id

src/main/java/com/springboot/app/JibberJabberRestAPI/Jibber.java

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+package com.springboot.app.JibberJabberRestAPI;
+
+
+import lombok.Getter;
+import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
+
+import javax.persistence.*;
+import java.util.Date;
+import java.util.Objects;
+
+
+@Entity
+@Getter
+@Setter
+@Table(name = "jibbers")
+public class Jibber {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    private String message;
+
+    @CreationTimestamp
+    @Column(name = "created_date")
+    private Date createdDate;
+
+    Jibber () {}
+
+    Jibber(String message, Date createdDate) {
+        this.message = message;
+        this.createdDate = createdDate;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+
+        if (this == o)
+            return true;
+        if (!(o instanceof Jibber))
+            return false;
+        Jibber jibber = (Jibber) o;
+        return Objects.equals(this.id, jibber.id) && Objects.equals(this.message, jibber.message)
+                && Objects.equals(this.createdDate, jibber.createdDate);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(this.id, this.message, this.createdDate);
+    }
+
+    @Override
+    public String toString() {
+        return "Jibber{" + "id=" + this.id + ", message='" + this.message + '\'' + ", createdDate='" + this.createdDate
+                + '\'' + '}';
+    }
+}

src/main/java/com/springboot/app/JibberJabberRestAPI/JibberController.java

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+package com.springboot.app.JibberJabberRestAPI;
+
+
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+public class JibberController {
+
+    private final JibberRepository repository;
+
+
+    public JibberController(JibberRepository repository) {
+        this.repository = repository;
+    }
+
+    @GetMapping("/jibbers")
+    List<Jibber> all() {return repository.findAll();}
+
+    @PostMapping("/jibbers")
+    Jibber newJibber(@RequestBody Jibber newJibber) { return repository.save(newJibber);}
+
+    //single item(id)
+
+    @GetMapping("jibbers/{id}")
+    Jibber one(@PathVariable int id) {
+
+        return repository.findById(id)
+                .orElseThrow(() -> new JibberNotFoundException((id)));
+    }
+}

src/main/java/com/springboot/app/JibberJabberRestAPI/JibberNotFoundAdvice.java

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+package com.springboot.app.JibberJabberRestAPI;
+
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ControllerAdvice
+public class JibberNotFoundAdvice {
+
+    @ResponseBody
+    @ExceptionHandler(JibberNotFoundException.class)
+    @ResponseStatus(HttpStatus.NOT_FOUND)
+    String jibberNotFoundHandler(JibberNotFoundException ex) {
+        return ex.getMessage();
+    }
+}

src/main/java/com/springboot/app/JibberJabberRestAPI/JibberNotFoundException.java

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+package com.springboot.app.JibberJabberRestAPI;
+
+class JibberNotFoundException extends  RuntimeException {
+
+    JibberNotFoundException(Integer id) {
+        super("Could not find Jibber" + id);
+    }
+}

src/main/java/com/springboot/app/JibberJabberRestAPI/JibberRepository.java

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+package com.springboot.app.JibberJabberRestAPI;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface JibberRepository extends JpaRepository<Jibber, Integer> {
+}