@Data @AllArgsConstructor @NoArgsConstructor @ToString @Builder
public class Employee{
private String name;
private int age;
}

public class EmployeeData{
public static void main(String[] args){
    Employee
    .builder()
    .name("deepthi")
    .age(24)
    .build();
    
    Employee e = Employee
    .builder()
    .build()
    System.out.println(e.getName() + " " + e.getAge())
    }
}

@Data @AllArgsConstructor @NoArgsConstructor @ToString @Builder
public class Chocolate{
private String name;
private Double price;
private Boolean isAvailable;

// creating constructor for class Chocolate for name and price variables
@Builder
public Chocolate(String name, Double price){
this.name = name;
this.price = price;
}
}

public class ChocolateData{
public static void main(String[] args){
   Chocolate c = Chocolate
    .builder()
    .name("Kitkat")
    .price(10.0)
    .build();
   
    System.out.println(c.getName() + " " + c.getPrice() + " " + c.getIsAvailable())
    }
}

@Data @AllArgsConstructor @NoArgsConstructor @ToString @Builder
public class Books{
private String author;
private Integer pages;
private Boolean isAvailable;

// creating constructor for class Books for author, pages and isAvailable variables
public Books(String author, Integer pages, Boolean isAvailable){
this.author = author;
this.pages = pages;
this.isAvailable = isAvailable;
}

// creating a  instance method BooksInstance(object of this class)
@Builder
private static Books BooksInstance(String author, Integer pages){
  return new Books(author, pages, true); // creating object of Books class
}

public class BooksData{
public static void main(String[] args){
   Books c = Books
    .builder()
    .author("Dr Joseph Murphy")
    .pages(270)
    .build();
   
    System.out.println(c.getAuthor() + " " + c.getPages() + " " + c.getIsAvailable())
    }
}

@Data @AllArgsConstructor @NoArgsConstructor @ToString @Builder
public class FluidBloodPressure{
private List<Sections> sections;
}

@Data @AllArgsConstructor @NoArgsConstructor @ToString @Builder
public Sections{
private String patient;
private List<Treatment> treatment;
}

public Interface report{
getReport(fluidBloodPressure);
}

private Interface getReport(FluidBloodPressure fluidBloodPressure){
    FluidBloodPressure fbp = FluidBloodPressure
    .builder()
    .sections(fluidBloodPressure.getSections()
    .stream()
    .map(listItem -> FluidBloodPressure.builder()
    .patient(listItem.getPatient())
    .treatment(listItem.getTreatment())
    .build())
    .collect(Collections.toList()))
    .build();
return fbp;
}

@ToString @Data @AllArgsConstructor @NoArgsConstructor
@Builder
public class BuilderWithoutDefaultValue{
  private Long id;
  private String name = "Deepthi";
  private Boolean merit;
}

public class Test{
public static void main (String[] args){
    BuilderWithoutDefaultValue result = BuilderWithoutDefaultValue.builder().build();
    System.out.println(result);
  }
}

@ToString @Data @AllArgsConstructor @NoArgsConstructor
@Builder
public class BuilderWithDefaultValue{
  private Long id;
  @Default
  private String name = "Deepthi";
  @Builder.Default
  private Boolean merit = true;
}

public class Test{
public static void main (String[] args){
    BuilderWithDefaultValue result = BuilderWithDefaultValue.builder().build();
    System.out.println(result);
  }
}