设计模式
工厂模式
```java
public class Test {
public static void main(String[] args) {
Computer c1 =ComputerFactory.createComputerInstance();
c1.start();
Computer c2=ComputerFactory.createComputerInstance();
c2.start();
System.out.println(c1==c2); //false
}
}
class ComputerFactory {
public static Computer createComputerInstance() {
return new Computer(16,"华为","华硕");