java _io_字符缓冲流的输入、输出
发布时间:2020-12-15 01:56:22 所属栏目:Java 来源:网络整理
导读:新增方法: 输入: BufferedReader breader=new BufferedReader(Reader reader); .readLine()读取一行内容,返回字符串 输出: BufferedWriter bwriter=new BufferedWirter(Writer writer); .newLine() 写入一个换行符 输入: File f =new File("C:Users10853
新增方法:
输入: BufferedReader breader=new BufferedReader(Reader reader); .readLine()读取一行内容,返回字符串 输出: BufferedWriter bwriter=new BufferedWirter(Writer writer); .newLine() 写入一个换行符 输入: reader=new BufferedReader(new FileReader(f)); String line=null; while((line=reader.readLine())!=null)//要添上!=null,不像c语言赋值表达式整个也有个真假结果 { System.out.println(line); } }catch(FileNotFoundException e) { e.printStackTrace(); }catch(IOException e) { e.printStackTrace(); }finally { try { if(null!=reader) { reader.close(); } }catch(IOException e) { e.printStackTrace(); } } 输出: File f=new File("D:d/c.txt"); BufferedWriter bwriter=null; try { bwriter=new BufferedWriter(new FileWriter(f)); String s="addad"; bwriter.write(s); bwriter.newLine(); bwriter.append("aaaff"); bwriter.flush(); }catch(FileNotFoundException e) { e.printStackTrace(); }catch(IOException e) { e.printStackTrace(); }finally { try { if(null!=bwriter) { bwriter.close(); } }catch(IOException e) { e.printStackTrace(); } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |