redirectin.java

疯狂Java讲义_源码(含Java设计模式CHM

import java.io.*;
import java.util.*;
/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class RedirectIn
{
	public static void main(String[] args) 
	{
		FileInputStream fis = null;
		try
		{
			fis = new FileInputStream("RedirectIn.java");
			//将标准输入重定向到fis输入流
			System.setIn(fis);
			//使用System.in创建Scanner对象，用于获取标准输入
			Scanner sc = new Scanner(System.in);
			//增加下面一行将只把回车作为分隔符
			sc.useDelimiter("\n");
			//判断是否还有下一个输入项
			while(sc.hasNext())
			{
				//输出输入项
				System.out.println("键盘输入的内容是：" + sc.next());
			}

		}
		catch (IOException ex)
		{
			ex.printStackTrace();
		}
		finally
		{
			if (fis != null)
			{
				try
				{
					fis.close();
				}
				catch (IOException ex)
				{
					ex.printStackTrace();
				}
			}
		}
	}
}