读写文件的问题。

Question

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;public class MakePoint { public static void main(String[] args) throws FileNotFoundException, IOException {
FileReader myFileReader1=new FileReader("d:/javatest/result2.txt");
BufferedReader myBufferedReader1=new BufferedReader(myFileReader1);
String RsString=null;
String tmpString=null;
String resultString=null;
FileWriter writer=new FileWriter("d:/javatest/result3.txt",true );while((RsString=myBufferedReader1.readLine())!=null)
{
        resultString=RsString;
                writer.write(resultString+"\n");   
}
myFileReader1.close();}
}
把result2.txt的内容一行一行读取并写到result3.txt中，result2.txt总共有300行，但是result3.txt中只有161行，怎么回事呀？为什么行数不一样？应该怎么改。

Answer 1

while((RsString=myBufferedReader1.readLine())!=null)
{
        resultString=RsString;
                writer.write(resultString+"\r\n");   

}
writer.flush();
myFileReader1.close();

Answer 2

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;public class MakePoint { public static void main(String[] args) throws FileNotFoundException, IOException {
FileReader myFileReader1=new FileReader("d:/javatest/result2.txt");
BufferedReader myBufferedReader1=new BufferedReader(myFileReader1);
String RsString=null;
String tmpString=null;
String resultString=null;
FileWriter writer=new FileWriter("d:/javatest/result3.txt",true );while((RsString=myBufferedReader1.readLine())!=null)
{
        resultString=RsString;
                writer.write(resultString+"\r\n");   
                writer.flush();
}
myFileReader1.close();}
}

Answer 3

记得每次都要释放缓存的内容以及关闭流...要养成习惯.
writer.flush();
writer.close();

Answer 4

while((RsString=myBufferedReader1.readLine())!=null)
{
        resultString=RsString;
                writer.write(resultString+"\r\n");
                writer.flush();
}
LZ忘记flush()啦，而且换行用\r\n

Answer 5

要writer.flush(); writer.close();啊  这样才能把缓冲区的内容全部输出啊！！！！