Java接口练习（组装电脑）

CPU.java

public interface CPU {

    //获取品牌
    public abstract String getBrand();

    //获取CPU频率
    public abstract String getHZ();
}

EMS.java

public interface EMS {

    //获取内存容量
    public abstract String getEMSCapacity();
}

HardDisk.java

public interface HardDisk {

    //获取硬盘容量
    public abstract String getHardDiskCatacity();
}

AMDCPU.java

public class AMDCPU implements CPU {
    @Override
    public String getBrand() {
        return "AMD";
    }

    @Override
    public String getHZ() {
        return "2000hz";
    }


}

IntelCPU.java

public class IntelCPU implements CPU {
    @Override
    public String getBrand() {
        return "intel";
    }

    @Override