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Aug 25th, 2007

calling another function in nested class

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this is my code..

Java Syntax (Toggle Plain Text)
class NewAction implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
 
		TArea2.setDocument(new PlainDocument());
		}
	}
	void confirmation()
	{
	int ReturnValue=JOptionPane.showConfirmDialog(null,"Do you want to open a new file?    ","Confirmation  ", JOptionPane.YES_NO_CANCEL_OPTION  );
 
	if(ReturnValue==JOptionPane.YES_OPTION)
	{
		//HOW CAN I POSSIBLY CALL THE METHOD IN THE NewAction class??  
	}
	else if(ReturnValue==JOptionPane.CANCEL_OPTION)
	{	
	}
	}
class NewAction implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
 
		TArea2.setDocument(new PlainDocument());
		}
	}
	void confirmation()
	{
	int ReturnValue=JOptionPane.showConfirmDialog(null,"Do you want to open a new file?    ","Confirmation  ", JOptionPane.YES_NO_CANCEL_OPTION  );
 
	if(ReturnValue==JOptionPane.YES_OPTION)
	{
		//HOW CAN I POSSIBLY CALL THE METHOD IN THE NewAction class??  
	}
	else if(ReturnValue==JOptionPane.CANCEL_OPTION)
	{	
	}
	}

sorry for my newbie question but can we actually call the actionPerformed method inside the NewAction class from the confirmation method??

i did try some like
this.NewAction().actionPerformed();
myclass.NewAction.actionPeformed();
NewAction().actionPerformed();
NewAction.actionPerformed();

i dont know any possibilities anymore..
help me please..
i changed the NewAction class become public but still doesnt work..

thanks

Last edited by w32.sysfile; Aug 25th, 2007 at 6:20 am.

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w32.sysfile

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Newbie Poster

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Aug 25th, 2007

Re: calling another function in nested class

Think about what you're doing:
You want to call a method on a class, so you'd better make sure you have an instance of that class.

In this case that class is an inner class to another class, so you must first have an instance of that other class.

That leads you to something like

Java Syntax (Toggle Plain Text)
this.new NewAction().actionPerformed();
this.new NewAction().actionPerformed();

jwenting

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duckman

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Aug 25th, 2007

Re: calling another function in nested class

it doesnt work, but thanks

i think it is better to changet the hierarchy, i realize that my code is confusing

w32.sysfile

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Aug 25th, 2007

Re: calling another function in nested class

well, based on your bit of code something like that should work.
Problem is that that code is rather ambiguous and it is of course not at all clear what you're actually trying to accomplish.

jwenting

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duckman

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Aug 25th, 2007

Re: calling another function in nested class

ok then, actually i am making a notepad like program, i want whenever i press the "New" , "Open", Exit" buttons, it will prompt me for saving, but now i am confused with this..

w32.sysfile

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Aug 27th, 2007

Re: calling another function in nested class

You could of course just put that code in a regular method and call it from your other listeners. Why do you feel it needs to be another class?

If it does need to be a class, then yes, you can call it like jwenting wrote, but of course you will need to supply the method parameter. A null will suffice if you aren't actually using the ActionEvent param for anything. If you tried to call it with no parameter then certainly it didn't work.

Ezzaral

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Posting Genius

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Aug 28th, 2007

Re: calling another function in nested class

i think u shud try the following:

java Syntax (Toggle Plain Text)
(new NewAction()).actionPerformed();
(new NewAction()).actionPerformed();

just one extra ()

orko

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