Add Pet Scheduler assignment

PetCareScheduler/src/main/java/Appointment.java

@@ -0,0 +1,67 @@
+import java.time.LocalDate;
+import java.time.LocalTime;
+
+import static java.util.Objects.requireNonNull;
+
+public final class Appointment {
+
+    private Type type;
+    private LocalDate date;
+    private LocalTime time;
+    private String notes;
+
+    public Appointment(Type type, LocalDate date, LocalTime time, String notes) {
+        this.type = requireNonNull(type, "Type must not be null");
+        this.date = requireNonNull(date, "date must not be null");
+        this.time = requireNonNull(time, "time must not be null");
+        this.notes = requireNonNull(notes, "note must not be null");
+    }
+
+    public Type getType() {
+        return type;
+    }
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public LocalTime getTime() {
+        return time;
+    }
+
+    public String getNotes() {
+        return notes;
+    }
+
+    public void setType(Type type) {
+        this.type = requireNonNull(type, "Type must not be null");
+    }
+
+    public void setDate(LocalDate date) {
+        this.date = requireNonNull(date, "date must not be null");
+    }
+
+    public void setTime(LocalTime time) {
+        this.time = requireNonNull(time, "time must not be null");
+    }
+
+    public void setNotes(String notes) {
+        this.notes = requireNonNull(notes, "note must not be null");
+    }
+
+    @Override
+    public String toString() {
+        return "Appointment{" +
+                "type=" + type +
+                ", date=" + date +
+                ", time=" + time +
+                ", notes='" + notes + '\'' +
+                '}';
+    }
+
+    public enum Type {
+        VET_VISIT,
+        VACCINATION,
+        GROOMING
+    }
+}