Forum: Uppdatering av fönster

 
public class meny extends JFrame implements ActionListener, Externalizable{
	//Reader/Writer
	public void readExternal(ObjectInput file)throws IOException{}
	public void writeExternal(ObjectOutput file)throws IOException{}
	
.....................
 
//Spara & -ppna
 	public static void spara(Object obj, String namn){
		try{
			ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(namn));
			out.writeObject(obj);
			out.close();
		}
		catch(IOException ie){
			ie.printStackTrace();
			System.exit(1);
		}
	}
	
	public static Object oppna(String namn){
		Object obj = null;
		try{
			ObjectInputStream in = new ObjectInputStream(new FileInputStream(namn));
			obj = in.readObject();
			in.close();
		}
		catch(IOException ie){
			ie.printStackTrace();
			System.exit(1);
		}
		catch(ClassNotFoundException ce){
			ce.printStackTrace();
			System.exit(2);
		}
		return obj;
	}
 	
 	//Händelser
 	public void actionPerformed(ActionEvent e){
	  	if(e.getSource() == arkivAlt[0] /*||  e.getSource() == B_nyttpass*/) {
			pass pass_fonster = new pass("Namnlös");
			pass_fonster.setVisible(true);
			add(pass_fonster);
		}
		//-ppna
		else if(e.getSource() == arkivAlt[1]) {
			oppnaDialog.show();
			if(oppnaDialog.getFile() != null){
				oppna(oppnaDialog.getDirectory() + oppnaDialog.getFile());
			}
			
			repaint();
		}
		//Spara
		else if(e.getSource() == arkivAlt[2]) {
			sparaDialog.show();
			if(sparaDialog.getFile() != null){
				spara(pass_fonster, sparaDialog.getDirectory() + sparaDialog.getFile());
			}
		}
			
  	}
  }