18天Java学习---Java的对象序列化以及文件IO处理

class CashCheck implements Serializable

{

    privatestaticfinallongserialVersiOnUID= -8872155900725314694L;

    privateString cashCheckID;

    privateintcashAmout;

    publicCashCheck()

    {

    }

    publicString getCashCheckID()

    {

        returncashCheckID;

    }

    publicvoidsetCashCheckID(String cashCheckID)

    {

        this.cashCheckID = cashCheckID;

    }

    publicintgetCashAmout()

    {

        returncashAmout;

    }

    publicvoidsetCashAmout(intcashAmout)

    {

        this.cashAmout = cashAmout;

    }

}

public class SerializeDemo01

{

    publicstaticvoidmain(String[] args)

    {

        CashCheck check =newCashCheck();

        check.setCashAmout(10000);

        check.setCashCheckID("notifier");

        /*

         * 序列化对象

         */

        try

        {

            // 1.创建文件输出流,负责将字节写入文件

            FileOutputStream fs = new FileOutputStream(

                    new File(

                            "C:\\Documents and Settings\\Administrator\\桌面\\notifier.file"));

            // 2.创建对象输出流,负责将对象转为字节

            ObjectOutputStream os = new ObjectOutputStream(fs);

            // 3.写入对象

            os.writeObject(check);

            // 4.关闭对象输出流

            os.close();

        } catch (FileNotFoundException e)

        {

            e.printStackTrace();

        } catch (IOException e)

        {

            e.printStackTrace();

        }

        /*

         * 解序列化对象

         */

        try

        {

            // 1.创建文件输入流,负责将文件转为字节

            FileInputStream fi = new FileInputStream(

                    "C:\\Documents and Settings\\Administrator\\桌面\\notifier.file");

            // 2.创建对象输入流,负责将字节写入对象

            ObjectInputStream oi = new ObjectInputStream(fi);

            // 3.读出对象

            Object o1 = oi.readObject();

            if (o1 instanceof CashCheck)

            {

                CashCheck check1 = (CashCheck) o1;

                System.out.println(check1.getCashCheckID());

                System.out.println(check1.getCashAmout());

            }

            // 4.关闭对象输入流

            oi.close();

        } catch (FileNotFoundException e)

        {

            e.printStackTrace();

        } catch (IOException e)

        {

            e.printStackTrace();

        } catch (ClassNotFoundException e)

        {

            e.printStackTrace();

        }

        /*

         * 以文件的形式读出序列化文件,是乱码

         */

        try

        {

            FileReader fr =newFileReader(

                    newFile(

                            "C:\\Documents and Settings\\Administrator\\桌面\\notifier.file"));

            BufferedReader br =newBufferedReader(fr);

            String line =null;

            while((line = br.readLine()) !=null)

            {

                System.out.println(line);

            }

        }catch(FileNotFoundException e)

        {

            e.printStackTrace();

        }catch(IOException e)

        {

            e.printStackTrace();

        }

    }

}