工厂方法模式(Factory Method):定义一个用于创建对象的接口,让子类决定实例化哪一个类。工厂方法使一个类的实例化延迟到其子类。
package designMode.factoryMethod;
interface IProduct {
void function1();
void function2();
void function3();
}
package designMode.factoryMethod;
class Product1 implements IProduct{
@Override
public void function1() {
System.out.println("我能实现功能1!");
}
@Override
public void function2() {
System.out.println("我能实现功能2!");
}
@Override
public void function3() {
System.out.println("我能实现功能3!");
}
}
class Product2 implements IProduct{
@Override
public void function1() {
System.out.println("我也能实现功能1!");
}
@Override
public void function2() {
System.out.println("我也能实现功能2!");
}
@Override
public void function3() {
System.out.println("我也能实现功能3!");
}
}
package designMode.factoryMethod;
interface IFactory {
IProduct produce();
}
package designMode.factoryMethod;
class Factory1 implements IFactory{
@Override
public IProduct produce() {
return new Product1();
}
}
class Factory2 implements IFactory{
@Override
public IProduct produce() {
return new Product1();
}
}
package designMode.factoryMethod;
class Test {
public static void main(String[] args) {
//创建产品1工厂
IFactory f1 = new Factory1();
// IFactory f2 = new Factory2();
IProduct p1 = f1.produce();
p1.function1();
p1.function2();
p1.function3();
}
}