最简单的程序错误:见内

import java.io.*;
/*
JHelloWorld
@author zhf
@version helloworld 1.0
*/
class JHelloWorld
{
public static void main(String[] args)
{
String str;
DataInputStream stream=new DataInputStream(System.in);
System.out.println("Please Enter Words:\n");
str=stream.readline();//不能识别
System.out.println(str);
try
{
stream.close();
}
catch(IOException e)
{
}
}
}
错误提示:
---------- javaC ----------
JHelloWorld.java:14: cannot resolve symbol
symbol : method readline ()
location: class java.io.DataInputStream
str=stream.readline();
^
1 error