输入输出流的记忆方法

输入输出流中的“输入”和“输出”是相对于“流”本身这个对象而言。

程序清单：FileStream.java

import java.io.*;
public class FileStream
{
	public static void main(String[] args)
	{
		File f = new File("hello.txt"); 
		try
		{
			FileOutputStream out = new FileOutputStream(f);
			byte buf[]="www.it315.org".getBytes();
			out.write(buf);
			out.close();
		}
		catch(Exception e)
		{
			System.out.println(e.getMessage());
		}
		
		try
		{
			FileInputStream in = new FileInputStream(f);
			byte [] buf = new byte[1024];
			int len = in.read(buf);
			System.out.println(new String(buf,0,len));
		}
		catch(Exception e)
		{
			System.out.println(e.getMessage());
		}
	}
}