strange build classes

What is the reason Eclipse has two java classes four times in build / classes folder - like this:
AutoparaatiApplication.class
AutoparaatiApplication$1.class
AutoparaatiApplication$2.class
AutoparaatiApplication$3.class
ComboView.Class
ComboView$1.Class
ComboView$2.Class
ComboView$3.Class

How to avoid it?
All other classes are only once.
Tapani

Your AutoparaatiApplication and ComboView classes contain anonymous inner classes.

For example, the following ClickListener is an anonymous inner class:

button.addListener(new ClickListener() {

	public void buttonClick(ClickEvent event) {
		System.out.println("Button clicked!");
	}

});

-Henri

Thanks Henri!