import java.io.*;

public class TestRedirect
{
    public static void main(String[] args)throws IOException,FileNotFoundException
    {
        FileInputStream fis=new FileInputStream("e:\\TestGridBag1.java");
    
        PrintStream ps=new PrintStream(new FileOutputStream("e:\\aaa.txt"));
        System.setErr(ps);  //重定向错误输出流
        int flag=0;
        while((flag=fis.read())>0)
        {
            System.out.print((char)flag);
        }
        
        fis.close();
        ps.close();
    }
}