设计模式——简单工厂模式

package com.java.design.simplefactory;

public interface IComputer {
    public void start();
}
package com.java.design.simplefactory;

public class LenovoComputer implements IComputer{
    @Override
    public void start() {
        System.out.println("联想电脑启动中......");
    }
}
package com.java.design.simplefactory;

public class HpComputer implements IComputer{
    @Override
    public void start() {
        System.out.println("惠普电脑启动中......");
    }
}
package com.java.design.simplefactory;

public class SimpleFactory {
    public static IComputer createComputer(String type){
        IComputer computer = null;
        switch (type){
            case "lenovo":
                computer = new LenovoComputer();
                break;
            case "hp":
                computer = new HpComputer();
                break;
        }
        return computer;
    }

    public static void main(String[] args) {
        IComputer lenovoComputer = SimpleFactory.createComputer("lenovo");
        lenovoComputer.start();
        IComputer hpComputer = SimpleFactory.createComputer("hp");
        hpComputer.start();
    }
}