字符写入文件

public static void writeLogFile(String str)
 {
  File flog=new File("codestyle.txt");
  String CTRL="\r\n";
  FileWriter logw=null;
  BufferedWriter blogw=null;
  try{
   logw=new FileWriter(flog,true);
   blogw=new BufferedWriter(logw);
   }catch(IOException  e){}
   try {
   blogw.write(str);
   blogw.write(CTRL);
   blogw.close();
   } catch(IOException ex){}
      
    
 }