filestream2.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 35 行

import java.io.*;

class FileStream2
{
	public static void main(String args[])
	{
		File f=new File("hello.txt");
		try
		{
			FileWriter out = new FileWriter(f);
			out.write("hello world");
			out.close();
			//out.flush();
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}

		try
		{
			FileReader in = new FileReader(f);
			char buf[]=new char[1024];
			int len=in.read(buf);
			in.close();
			if(len<0) len=0;
			System.out.println(new String(buf,0,len));
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
}