public class NutritionFacts {
private final int servingSize;
private final int servings;
private final int calories;
private final int fat;
private final int sodium;
private final int carbohydrate;
public NutritionFacts(Builder builder) {
servingSize = builder.servingSize;
servings = builder.servings;
calories = builder.calories;
fat = builder.fat;
sodium = builder.sodium;
carbohydrate = builder.carbohydrate;
}
public static class Builder {
// required parameters
private final int servingSize;
private final int servings;
// optional parameters
private int calories;
private int fat;
private int sodium;
private int carbohydrate;
public Builder(int servingSize, int servings) {
this.servingSize = servingSize;
this.servings = servings;
}
public Builder calories(int val) {
calories = val;
return this;
}
public Builder fat(int val) {
fat = val;
return this;
}
public Builder sodium(int val) {
sodium = val;
return this;
}
public Builder carbohydrate(int val) {
carbohydrate = val;
return this;
}
public NutritionFacts build() {
return new NutritionFacts(this);
}
}
public static void main(String[] args) {
NutritionFacts build = new Builder(240, 8)
.fat(100)
.sodium(11)
.carbohydrate(12)
.build();
}
}
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