抽象工厂模式在工厂模式的基础上又增加了一层抽象。将抽象工厂模式与工厂模式比较，很明显是添加了一个新的抽象层。抽象工厂是一个创建其他工厂的超级工厂。我们可以把它叫做“工厂的工厂”。
代码：
interface CPU { void process();} interface CPUFactory { CPU produceCPU();} class AMDFactory implements CPUFactory { public CPU produceCPU() { return new AMDCPU(); }} class IntelFactory implements CPUFactory { public CPU produceCPU() { return new IntelCPU(); }} class AMDCPU implements CPU { public void process() { System.out.println("AMD is processing..."); }} class IntelCPU implements CPU { public void process() { System.out.println("Intel is processing..."); }} class Computer { CPU cpu; public Computer(CPUFactory factory) { cpu = factory.produceCPU(); cpu.process(); }} public class Client { public static void main(String[] args) { new Computer(createSpecificFactory()); } public static CPUFactory createSpecificFactory() { int sys = 0; // based on specific requirement if (sys == 0) return new AMDFactory(); else return new IntelFactory(); }}