新手求助！谢谢大侠

Question

错误如下：
error: cannot read: PipeStreamTest.java
1 errorE:\java\Lesson7>javac PipedStreamTest.java
PipedStreamTest.java:9: cannot find symbol
symbol  : method getOutputStream()
location: class java.lang.Thread
        PipedOutputStream out=t1.getOutputStream();
                                ^
PipedStreamTest.java:10: cannot find symbol
symbol  : method getInputStream()
location: class java.lang.Thread
                PipedInputStream in=t2.getInputStream();

Answer 1

把Thread t1=new Sender();
  Thread t2=new Receiver();
改为Sender t1=new Sender();
    Receiver t2=new Receiver();