问个线程初级问题
这是我照着书上写的   可运行总是错误   不解   希望大家帮帮忙.....  

class   NewThread   implements   Runnable{  
Thread   t;  

NewThread(){  
//Create   a   new   ,second   thread  
t=new   Thread(this, "Demo   Thread ");  
System.out.println( "Child   thread: "+t);  
t.start();  
}  

public   void   run(){  
try{  
for(int   i=5;i> 0;i--){  
System.out.println( "Child   Thread: "+i);  
Thread.sleep(500);  
}  
}catch   (InterruptedException   e){  
System.out.println( "Child   interrupted. ");  
}  
}System.out.println( "Exiting   child   thread. ");  
}  
public   class   Thread   {  

/**  
*   @param   args  
*/  
public   static   void   main(String[]   args)   {  

//   TODO   Auto-generated   method   stub  
new   NewThread();  
try{  
for(int   i=5;i> 0;i--){  
System.out.println( "Main   Thread: "+i);  
Thread.sleep(1000);  
}  
}catch(InterruptedException   e){  
System.out.println( "Main   thread   interrupted. ");  
}  
System.out.println( "Main   thread   exiting. ");  
}  

}


还有一个是copy论坛上的     可还是错  
String   s= " ";
int   n=0;
try{
BufferedReader   in   =new   BufferedReader(new   InputStreamReader(System.in));
System.out.println( "input   a   number: ");
s=in.readLine();//r   小写
n=Integer.parseInt(s);//不好意思，上面写错了   parseInt中i大写
}
catch(IOException   e)   {}
System.out.println( "you   input   a   "+n);

说BufferedReader   cannot   be   resolved   to   a   type  
希望大家指点一下   我在EC下     新手...

------解决方案--------------------
第1个程序 System.out.println( "Exiting child thread. "); 这句放错地方了,请放在方法里面