工厂模式

工厂模式：即通过一个类进行创建同一类型的不同对象。

 

例：有一个接口《InterfaceOne》、两个类《CalssOne》《ClassTwo》，具体代码如下：

package com.mkf.pattern;

public interface InterfaceOne {
	
	public String sayHello(String name);
	
}


package com.mkf.pattern.impl;

import com.mkf.pattern.InterfaceOne;

public class CalssOne implements InterfaceOne {
	
	public CalssOne() {
		System.out.println("CalssOne 被创建");
	}

	@Override
	public String sayHello(String name) {
		return "CalssOne Say: Hello " + name;
	}

}


package com.mkf.pattern.impl;

import com.mkf.pattern.InterfaceOne;

public class ClassTwo implements InterfaceOne {

	public ClassTwo(){
		System.out.println("ClassTwo 被创建");
	}
	
	@Override
	public String sayHello(String name) {
		return "ClassTwo Say: Hello " + name;
	}

}

 

 

我们用一个类进行创建《CalssOne》《ClassTwo》对象，

具体的工厂类如下：

 

package com.mkf.pattern;

import com.mkf.pattern.impl.CalssOne;
import com.mkf.pattern.impl.ClassTwo;

public class FactoryPattern {
	
	public static InterfaceOne createObject(Class<? extends InterfaceOne> class1){
		InterfaceOne io = null;
		try {
			io = class1.newInstance();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}
		return io;
	}
	
	public static void main(String[] args) {
		System.out.println(
				FactoryPattern.createObject(CalssOne.class)
				.sayHello("CalssOne"));
		System.out.println(
				FactoryPattern.createObject(ClassTwo.class)
				.sayHello("ClassTwo"));
	}
}