一个读写文件的异常

Question

改成
                  BufferedReader buffer = new BufferedReader(inputReader); String line = "";
while ( (line = buffer.readLine()) != null)
{

}

Answer 1

BufferedReader buffer = new BufferedReader(in); String line = "";
while ( (line = buffer.readLine()) != null)
{

}

Answer 2

public static void main(String[] args)
{
try{
File inFile=new File("testFile.txt");
File outFile=new File("outTxt.txt");

FileReader in=new FileReader(inFile);
FileWriter out=new FileWriter(outFile);

BufferedReader buffer=new BufferedReader(in);
String s=buffer.readLine();




while(s != null)//判断是否为null
{
                      if((!s.equals("")){
System.out.println(s);
out.write(s);
s=buffer.readLine();
                       }
}
}
catch(IOException e){}
}