为什么代码输出不换行

package com.imooc.out;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

public class Reader1 {

public void transWriteByBuf() {

try {

FileWriter fw=new FileWriter("thread.txt");

BufferedWriter bw=new BufferedWriter(fw);

bw.write("你好吗？");

bw.write("我很好！");

bw.close();

fw.close();

}catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public void transReadByBuf() {

try {

FileReader fr=new FileReader("thread.txt");

BufferedReader br=new BufferedReader(fr);

String n=null;

while((n=br.readLine())!=null) {

System.out.println(n);

}

br.close();

fr.close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}catch(IOException e){

e.printStackTrace();

}

}

}