java 读取一个文件。并生成另外一个文件

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;

/**
*
* @author Administrator
*/
public class ReadInt {
public static void main(String[] args) throws Exception{
BufferedReader br = new BufferedReader(new FileReader(new File("1.txt").getAbsolutePath()));
BufferedWriter bw = new BufferedWriter(new FileWriter(new File("2.txt").getAbsoluteFile()));
String number = null;
int sum = 0;
int count = 0;
int avg = 0;
while((number = br.readLine()) != null){
bw.write(number);
bw.write(" ");
sum = sum + Integer.parseInt(number);
count++;
}
avg = sum / count;
bw.write("\n");
bw.write("平均值是：&