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public class Car {

  public static class Builder {
      private int year;
      private String make;
        private String model;
        private String color;

        public Builder year(int year) { this.year = year; return this; }
        public Builder make(String make) { this.make = make; return this; }
        public Builder model(String model) { this.model = model; return this; }
        public Builder color(String color) { this.color = color; return this; }

        public Car build() {
          return new Car(year, make, model, color);
      }
   }

   private final int year;
   private final String make;
   private final String model;
   private final String color;

   private Car(int year, String make, String model, String color) {
      this.year = year;
        this.make = make;
        this.model = model;
        this.color = color;
  }

  public static Builder builder() {
      return new Builder();
  }

}


// Using this fluent API...
Car car = Car.builder()
   .year(2007)
   .make("Toyota")
   .model("Camry")
   .color("blue")
   .build();