Java读写txt文件方法

读

try{
           File fil = new File("D:/HTML/JavaWeb/src/time.txt");
           FileInputStream fis = new FileInputStream(fil);
           if(!fil.exists()){
               fil.createNewFile();
           }
           b=fis.read();
           if(b<0)b=0;
           fis.close();
       }catch (IOException e){
           e.printStackTrace();
       }

写

try{
            FileOutputStream fos = null;
            File file = new File("D:/HTML/JavaWeb/src/time.txt");
            fos = new FileOutputStream(file);
            fos.write(b);
            fos.close();
        }catch (IOException e){
            e.printStackTrace();
        }