链式编程

package cainiao.phoneassistant;

/**
 * 项目名称：PhoneAide
 * 创建人：LI
 * 创建时间：2017/4/17 8:42
 * 功能描述：
 */
public class Car {
    public  Builder builder;
    private Car() {
    }

    public Car(Builder builder) {
        this.builder = builder;
    }
    public static Builder builder(){
        return new Builder();
    }

    public static class Builder{
        private String name;
        private String age;
        public Builder setName(String name){
            name=name;
            return this;
        }
        public Builder setAge(String age)
        {
            age=age;
            return this;
        }
        public Car build(){
            return new Car(this);
        }

    }
}