41异常的概念 用异常的形式处理错误 read-File: i try i open TheFile determine its size allocate that much memory closeTheFile 3 catch(fileopen Failed)i dosomething catch(sizeDetermineFailed) dosomething catch(memoryAllocateFailed) dosomething; I catch(readFailed)i dosomething catch(fileCloseFailed) dosomething; I4.1 异常的概念 6 用异常的形式处理错误 read-File; { try { openTheFile; determine its size; allocate that much memory; closeTheFile; }catch(fileopenFailed) { dosomething; } catch(sizeDetermineFailed) {dosomething;} catch(memoryAllocateFailed){ dosomething;} catch(readFailed){ dosomething;} catch(fileCloseFailed) { dosomething; } }