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();
}
}
In short,
Actually, this is a very important concept of modern frameworks. Here is a question about this.
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