Java serializable object to a file?

This } catch (IOException ex) { System.out. Println(ex.getMessage()); } should be: } catch (IOException ex) { ex.printStackTrace(); } This will give you much better information, most importantly the exact line where the NullPointerException occurs and from where that line is reached. If that doesn't make the cause of the problem obvious, start the program in a debugger and put a breakpoint on that line.

The detail exception are following:Exception in thread "AWT-EventQueue-0" java.lang. NullPointerException – Jack Dec 24 '10 at 17:46 1 @Jack: the important part is the lines after that. – Michael Borgwardt Dec 24 '10 at 18:41 this is all I can print – Jack Dec 24 '10 at 22:37.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.