怎么使用StreamTokenizer 里的TT_EOL啊

Question

import java.io.*;
class ttword
{
public static void main(String[] args)throws IOException
{
FileReader yuanma=new FileReader("yuanma.txt");
StreamTokenizer duqu=new StreamTokenizer(yuanma);

while(duqu.nextToken()=StreamTokenizer.TT_EOL)
{
System.out.println("ssssssss");
}
}
}这个程序的编译错误怎么解释啊~~~~~~~~

Answer 1

while(duqu.nextToken()==StreamTokenizer.TT_EOL)
                               ~~

Answer 2

或 while(duqu.nextToken()!=StreamTokenizer.TT_EOL)
                               ～～