Java:IO流的综合用法(从键盘录入数据并打印在控制台上)

import java.io.*;
public class IOTestDouble
{
public static void main(String[] args)throws Exception
{
BufferedReader bufr = null;
BufferedWriter bufw = null;
try
{
bufr = new BufferedReader(new InputStreamReader(System.in));//读入流路径为键盘录入
bufw = new BufferedWriter(new OutputStreamWriter(System.out));//输出流路径为控制台输出
String line = null;
//从键盘读取数据
while((line = bufr.readLine()) != null)
{
bufw.newLine();
if(line.equals("quit"))
break;
//将数据打印在控制台上
bufw.write(line);
}
}
catch(IOException ie)
{
throw new RuntimeException("读入读取流异常");
}
finally
{
try
{
if(bufr!=null)
bufr.close();
}
catch(IOException ie)
{
throw new RuntimeException("读取流关闭异常");
}
try
{
if(bufw!=null)
bufw.close();
}
catch(IOException ie)
{
throw new RuntimeException("输出流关闭异常");
}
}
}
}