Java 按行读取文件按行写入文件并以空格分割字符串的方法

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

public class TxtChange {
 public static void main(String[] args){ 
  File file=new File("E:oldData.txt"); 
  BufferedReader reader=null; 
  String temp=null; 
  int line=1; 
  try{ 
    reader=new BufferedReader(new FileReader(file)); 
    while((temp=reader.readLine())!=null){ 
     // System.out.println("第"+line+"行:"+temp);

     String string=AnalyzeStr.getAnalyze().getNewString(temp);//调用分割方法
     System.out.println(string);
     AnalyzeStr.getAnalyze().saveRecordInFile(string);//调用按行存储字符串
     line++; 
    } 
  } 
  catch(Exception e){ 
   e.printStackTrace(); 
  } 
  finally{ 
   if(reader!=null){ 
    try{ 
     reader.close(); 
    } 
    catch(Exception e){ 
     e.printStackTrace(); 
    } 
   } 
  } 
 } 
}

public String getNewString(String fileName){
  String str1="";
  String str2="";
  String str3="";
  String []arrayStr=fileName.split("s+");
  str1="ntt"+arrayStr[0];
  str2="t"+arrayStr[1];
  str3="t"+arrayStr[2];
  return str1+str2+str3;
 }

//追加记录
 public void saveRecordInFile(String str) {
  File record = new File(path);//记录结果文件
  try {
   if (!record.exists()) {

    File dir = new File(record.getParent());
    dir.mkdirs();
    record.createNewFile();
   }
   FileWriter writer = null;
   try {
    // 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件
    writer = new FileWriter(record,true);
    writer.write(str);
   } catch (IOException e) {
    e.printStackTrace();
   } finally {
    try {
     if (writer != null) {
      writer.close();
     }
    } catch (IOException e) {
     e.printStackTrace();
    }
   }
  } catch (Exception e) {
   System.out.println("记录保存失败");
  }
 }