刚开始学编程，请问这段代码哪里错了？
import java.io.*;
public class PipeStreamTest
{
public static void main(String [] args)
{
try{
Thread t1=new Sender();
Thread t2=new Receiver();
PipedOutputStream out=t1.getOutputStream();
PinedInputStream in=t2.getInputStream();
out.connect(in);
t1.start();
t2.start();
}

catch(Exception e)
{
System.out.println(e.getMessage());
}
}
}

class Sender extends Thread
{

private PipedOutputStream out=new PipedOutputStream();
public PipedOutputStream getOutputStream()
{
return out;
}
public void run()
{
String s=new String( "hello,receiver,how are you ");
try
{
out.write(s.getBytes());
out.close();
}
catch(Exception e)
{
System.out.println(e.getMessage());
}
}

}
class Receiver extends Thread
{
private PipedInputStream in =new PipedInputStream();
public PipedInputStream getInputStream()
{
return in;
}
public void run()
{
String s=null;
byte[] buf =new byte[1024];
try
{
int len=in.read(buf);
s=new String (buf,0,len);
System.out.println( "the follow message comes from sed=nder:\n "+s);
in.close();
}
catch(IOException e)
{
System.out.println(e.getMessage());
}

}
}

[解决办法]
Thread t1=new Sender();
Thread t2=new Receiver();
改为：
Sender t1=new Sender();
Receiver t2=new Receiver();
PinedInputStream改为：PipedInputStream
张孝祥Java 就业培训教程 上代码有的有错误，最好看视频！