通用Builder

/**
 * @author : sungm
 * @since : 2020-06-15 11:00
 */
public class Builder<T> {

    private final Supplier<T> supplier;
    private List<Consumer<T>> consumers = new ArrayList<>();

    private Builder(Supplier<T> supplier) {
        this.supplier = supplier;
    }

    public static <T> Builder<T> of(Supplier<T> supplier) {
        return new Builder<>(supplier);
    }

    public <U> Builder<T> with(BiConsumer<T, U> biConsumer, U u) {
        consumers.add(supplier -> biConsumer.accept(supplier, u));
        return this;
    }

    public T build() {
        T value = supplier.get();
        consumers.forEach(consumer -> consumer.accept(value));
        consumers.clear();
        return value;
    }

}

/**
 * @author : sungm
 * @since : 2020-06-15 11:15
 */
public class Person {

    private String name;
    private Integer age;
    private String sex;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", sex='" + sex + '\'' +
                '}';
    }
}

/**
 * @author : sungm
 * @since : 2020-06-15 11:15
 */
public class Main {

    public static void main(String[] args) {
        Person sungm = Builder.of(Person::new)
                .with(Person::setName, "孙广明")
                .with(Person::setAge, 25)
                .with(Person::setSex, "男")
                .build();
        System.out.println(sungm.toString());
    }

}

Person{name='孙广明', age=25, sex='男'}