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A class managing a vector of selializable objects
Serialization example from a Well House Consultants training course
More on Serialization [link]
Source code: Drawing.java Module: J809
static class Drawing extends Component { protected int wide,high; protected Frame box; protected Vector beads = new Vector(); public Drawing(Frame box, int wide, int high) { this.box = box; this.wide = wide; this.high = high; } public Dimension getPreferredSize() { return new Dimension(wide,high); } public Point getOffset() { return box.getLocation(); } public void extend(short x1, short y1, short x2, short y2) { beads.addElement(new Bead(x1,y1,x2,y2)); } public void paint(Graphics g) { for (int jp=0; jp<beads.size(); jp++) { Bead current = (Bead)beads.elementAt(jp); g.drawLine(current.x1, current.y1, current.x2, current.y2); } } public void save(){ String filename = "demo.data"; try { FileOutputStream f_o_s = new FileOutputStream(filename); ObjectOutputStream o_o_s = new ObjectOutputStream(f_o_s); o_o_s.writeObject(beads); o_o_s.flush(); o_o_s.close(); } catch (Exception e){ System.out.println(e); } } public void load(){ String filename = "demo.data"; try { FileInputStream f_i_s = new FileInputStream(filename); ObjectInputStream o_i_s = new ObjectInputStream(f_i_s); Vector incoming = (Vector)o_i_s.readObject(); o_i_s.close(); beads = incoming; repaint(); } catch (Exception e){ System.out.println(e); } } } Learn about this subject
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Other Examples
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other closely related examples on the "Serialization" module index page.
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