本文共 4578 字，大约阅读时间需要 15 分钟。

?????????CPU???

1.1 CPU

Intel?CPU???

public class IntelCPU implements CPUApi {    private int pins = 0;    public IntelCPU(int pins) {        this.pins = pins;    }    public void calculate() {        System.out.println("now in Intel CPU,pins=" + pins);    }}

AMDCPU?

public class AMDCPU implements CPUApi {    private int pins = 0;    public AMDCPU(int pins) {        this.pins = pins;    }    public void calculate() {        System.out.println("now in AMD CPU,pins=" + pins);    }}

1.2 ??

??????

public interface MainboardApi {    public void installCPU();}

?????

public class GAMainboard implements MainboardApi {    private int cpuHoles = 0;    public GAMainboard(int cpuHoles) {        this.cpuHoles = cpuHoles;    }    public void installCPU() {        System.out.println("now in GAMainboard,cpuHoles=" + cpuHoles);    }}

?????

public class MSIMainboard implements MainboardApi {    private int cpuHoles = 0;    public MSIMainboard(int cpuHoles) {        this.cpuHoles = cpuHoles;    }    public void installCPU() {        System.out.println("now in MSIMainboard,cpuHoles=" + cpuHoles);    }}

1.3 ??CPU??????

??CPU??????

public class CPUFactory {    public static CPUApi createCPUApi(int type) {        CPUApi cpu = null;        if (type == 1) {            cpu = new IntelCPU(1156);        } else if (type == 2) {            cpu = new AMDCPU(939);        }        return cpu;    }}

??????????

public class MainboardFactory {    public static MainboardApi createMainboardApi(int type) {        MainboardApi mainboard = null;        if (type == 1) {            mainboard = new GAMainboard(1156);        } else if (type == 2) {            mainboard = new MSIMainboard(939);        }        return mainboard;    }}

1.4 ???

public class ComputerEngineer {    private CPUApi cpu = null;    private MainboardApi mainboard = null;    public void makeComputer(int cpuType, int mainboardType) {        prepareHardwares(cpuType, mainboardType);        // ????        // ????        // ????    }    private void prepareHardwares(int cpuType, int mainboardType) {        this.cpu = CPUFactory.createCPUApi(cpuType);        this.mainboard = MainboardFactory.createMainboardApi(mainboardType);        this.cpu.calculate();        this.mainboard.installCPU();    }}

client?

public static void main(String[] args) {    ComputerEngineer engineer = new ComputerEngineer();    engineer.makeComputer(1, 2);}

2. ????????

??????????

public interface AbstractFactory {    public AbstractProductA createProductA();    public AbstractProductB createProductB();}

public class Schema1 implements AbstractFactory {    public CPUApi createCPUApi() {        return new IntelCPU(1156);    }    public MainboardApi createMainboardApi() {        return new GAMainboard(1156);    }}

public class ComputerEngineer {    private CPUApi cpu = null;    private MainboardApi mainboard = null;    private MemoryApi memory = null;    public void makeComputer(AbstractFactory schema) {        prepareHardwares(schema);        // ????        // ????        // ????    }    private void prepareHardwares(AbstractFactory schema) {        this.cpu = (CPUApi) schema.createProduct(1);        this.mainboard = (MainboardApi) schema.createProduct(2);        this.memory = (MemoryApi) schema.createProduct(3);        this.cpu.calculate();        this.mainboard.installCPU();        if (memory != null) {            this.memory.cacheData();        }    }}

3. ????????

public class Schema3 implements AbstractFactory {    public Object createProduct(int type) {        Object retObj = null;        if (type == 1) {            retObj = new IntelCPU(1156);        } else if (type == 2) {            retObj = new GAMainboard(1156);        } else if (type == 3) {            retObj = new HyMemory();        }        return retObj;    }}

public class ComputerEngineer {private CPUApi cpu = null;private MainboardApi mainboard = null;private MemoryApi memory = null;

public void makeComputer(AbstractFactory schema) {    prepareHardwares(schema);    // ????    // ????    // ????}private void prepareHardwares(AbstractFactory schema) {    this.cpu = (CPUApi) schema.createProduct(1);    this.mainboard = (MainboardApi) schema.createProduct(2);    this.memory = (MemoryApi) schema.createProduct(3);    this.cpu.calculate();    this.mainboard.installCPU();    if (memory != null) {        this.memory.cacheData();    }}

}

public static void main(String[] args) {ComputerEngineer engineer = new ComputerEngineer();AbstractFactory schema = new Schema3();engineer.makeComputer(schema);}

??????????????????????????????????????????????????

转载地址：http://gvq.baihongyu.com/