197
【設計模式】【命令模式】
/**
* Description:
* <br/>網站: <a href="https://www.crazyit.org">瘋狂Java聯盟</a>
* <br/>Copyright (C), 2001-2012, Yeeku.H.Lee
* <br/>This program is protected by copyright laws.
* <br/>Program Name:
* <br/>Date:
* @author Yeeku.H.Lee kongyeeku@163.com
* @version 1.0
*/
public class ProcessArray
{
//定義一個each()方法，用於處理數組，
public void each(int[] target , Command cmd)
{
cmd.process(target);
}
}
/**
* Description:
* <br/>網站: <a href="https://www.crazyit.org">瘋狂Java聯盟</a>
* <br/>Copyright (C), 2001-2012, Yeeku.H.Lee
* <br/>This program is protected by copyright laws.
* <br/>Program Name:
* <br/>Date:
* @author Yeeku.H.Lee kongyeeku@163.com
* @version 1.0
*/
public interface Command
{
//接口裏定義的process方法用於封裝“處理行為”
void process(int[] target);
}
/**
* Description:
* <br/>網站: <a href="https://www.crazyit.org">瘋狂Java聯盟</a>
* <br/>Copyright (C), 2001-2012, Yeeku.H.Lee
* <br/>This program is protected by copyright laws.
* <br/>Program Name:
* <br/>Date:
* @author Yeeku.H.Lee kongyeeku@163.com
* @version 1.0
*/
public class CommandTest
{
public static void main(String[] args)
{
ProcessArray pa = new ProcessArray();
int[] target = {3, -4, 6, 4};
//第一次處理數組，具體處理行為取決於Command對象
pa.each(target , new Command()
{
//重寫process()方法，決定具體的處理行為
public void process(int[] target)
{
for (int tmp : target )
{
System.out.println("迭代輸出目標數組的元素:" + tmp);
}
}
});
System.out.println("------------------");
//第二次處理數組，具體處理行為取決於Command對象
pa.each(target , new Command()
{
//重寫process方法，決定具體的處理行為
public void process(int[] target)
{
int sum = 0;
for (int tmp : target )
{
sum += tmp;
}
System.out.println("數組元素的總和是:" + sum);
}
});
}
}
最後更新：2017-04-04 07:03:38