老師佈置的一個作業：

畫圖軟體，可以將圖形儲存、開啟

寫一下如何將java物件儲存到檔案中

----------------------------------------------------------------------------------------------------------------

1、要儲存的物件必須實現Serializable介面

2、private void save(String path){ FileOutputStream fos = null; ObjectOutputStream oos = null; File f = new File(path); try { fos = new FileOutputStream(f); oos = new ObjectOutputStream(fos); oos.writeObject(javaObject); //括號內參數為要儲存java物件 } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ try { oos.close(); fos.close(); } catch (IOException e) { e.printStackTrace(); } } } private void open(String path){ FileInputStream fis = null; ObjectInputStream ois = null; File f = new File(path); try { fis = new FileInputStream(f); ois = new ObjectInputStream(fis); javaObject object = (javaObject)ois.readObject();//強制型別轉換 myPanel.repaint(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (ClassNotFoundException e) { e.printStackTrace(); }finally{ try { ois.close(); fis.close(); } catch (IOException e) { e.printStackTrace(); } } }