23种设计模式介绍----创建型模式(代码片段)

// 产品1
interface IProduct1
class Product1A implements IProduct1
// 扩展产品1 B系列
class Product1B implements IProduct1
// 产品2
interface IProduct2
class Product2A implements IProduct2
// 扩展产品2 B系列
class Product2B implements IProduct2
// 工厂
interface IFactory
    public IProduct1 getProduct1();
    public IProduct2 getProduct2();
;
// 工厂 A ，生产A系列产品
class FactoryA implements IFactory
    public IProduct1 getProduct1()
        return new Product1A();
    ;
    public IProduct2 getProduct2()
        return new Product2A();
    ;

// 工厂 B ，生产B系列产品
class FactoryB implements IFactory
    public IProduct1 getProduct1()
        return new Product1B();
    ;
    public IProduct2 getProduct2()
        return new Product2B();
    ;

public class testAbstractFactory 
    public void test()
        IFactory factory = new FactoryA();
        IProduct1 product1A = (IProduct1)factory.getProduct1();
        IProduct2 product2A = (IProduct2)factory.getProduct2();


        // 如果扩展产品系列B时，添加 FactoryB、ProductB即可，不需要修改原来代码
        factory = new FactoryB();
        IProduct1 product1B = (IProduct1)factory.getProduct1();
        IProduct2 product2B = (IProduct2)factory.getProduct2();

    

class Person
    private String name;
    private String address;
    private int age;
    private int sex;
    private int height;
    private int weight;
    public void setName(String name) this.name = name;
    public String getName() return name;
    public void setAddress(String address) this.address = address;
    public String getAddress() return address;
    public void setAge(int age) this.age = age;
    public int getAge() return age;
    public void setSex(int sex) this.sex = sex;
    public int getSex() return sex;
    public void setHeight(int height) this.height = height;
    public int getHeight() return height;
    public void setWeight(int weight) this.weight = weight;
    public int getWeight() return weight;

class PersonBuilder
    private Person person;
    public PersonBuilder()
        this.person = new Person();
    
    public PersonBuilder name(String name)
        this.person.setName(name);
        return this;
    
    public PersonBuilder address(String address)
        this.person.setAddress(address);
        return this;
    
    public PersonBuilder age(int age)
        this.person.setAge(age);
        return this;
    
    public PersonBuilder sex(int sex)
        this.person.setSex(sex);
        return this;
    
    public PersonBuilder height(int height)
        this.person.setHeight(height);
        return this;
    
    public PersonBuilder weight(int weight)
        this.person.setWeight(weight);
        return this;
    

public class TestBuilder 
    public test()
        PersonBuilder builder = new PersonBuilder();
        Person person = builder.name("lion")
                .address("america")
                .age(18)
                .sex(2)
                .height(180)
                .weight(150);
    

class Car implements Cloneable
    private int id;
    public int getId() return id;
    public void setId(int id) this.id = id;

    public Car clone()
        try 
            return (Car)super.clone();
        catch (CloneNotSupportedException e) 
            e.printStackTrace();
            return null;
        
    

class Prototype implements Cloneable
    private int id;
    private Car car;
    public Car getCar() return car;
    public void setCar(Car car) this.car = car;
    public int getId() return id;
    public void setId(int id) this.id = id;
    public Object clone()
        try 
            boolean deep = true;
            if (deep)
                /**
                 * 深复制，复制出了两辆车
                 * */
                Prototype prototype = (Prototype)super.clone();
                prototype.setCar((Car)this.car.clone());
                // 继续复制其他引用对象
                return prototype;

            else
                /**
                 * 浅复制 ，是同一辆车
                 * */
                return super.clone();
            
         catch (CloneNotSupportedException e) 
            e.printStackTrace();
            return null;
        
    

public class TestPrototype 
    public void test()
        Prototype p1 = new Prototype();
        p1.setCar(new Car());
        p1.setId(1);
        // 复制
        Prototype p2 = (Prototype)p1.clone();
        p2.setId(2);