Topic: 文件读取问题(readLine)????

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1.文件读取问题(readLine)???? Copy to clipboard
Posted by: jsxww2002
Posted on: 2005-05-19 10:30

怎样用readLine()输出指定的行?比如说一行的字符是“12”,比如说用
if 下面的程序????处应该用什么,我用过12 ,12\n 12\r\n 多不行。请问应该用什么?
import java.io.*;
class route
{
public static void main(String args[]) throws IOException
{
String str;
int count=0;
FileReader fr=new FileReader("mm.txt");
BufferedReader bfr=new BufferedReader(fr);

while((str=bfr.readLine())!=null){
count++;
if(str=="????")
System.out.println("\n");
}
System.out.println(count+" lines read");

fr.close(); ?
}
}

2.Re:文件读取问题(readLine)???? [Re: jsxww2002] Copy to clipboard
Posted by: danzel
Posted on: 2005-05-19 16:28

str.equals("????")
建议去看看 == 和 equals的区别

3.Re:文件读取问题(readLine)???? [Re: jsxww2002] Copy to clipboard
Posted by: jsxww2002
Posted on: 2005-05-19 20:50

谢谢!问题结局了。我是刚开始学JAVA的,以后还要请大家多指点。


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