Can this be done using abstract class??

[romina]

Hi, I have some questions i am not sure and would like to seek some advice.
Is there any way i can call a method of a class without instantiating an object instance from the class?
Can this be done using abstract class?

Code:

public class CatCollection
{
	public CatCollection()
	{
		.........
	}
	
	public void addCat(Cat aCat)
	{
		//adds a Cat object to an array in CatCollection
	}
}


public class MainClass
{
	public static void main(String[] args)
	{
		Cat kitty = new Cat(.......);
		
		CatCollection.addCat(kitty); --> how do i enable this to work?
	}
}

Thanks.

[Seemster]

set the method as static. for example I have class MyClass with a method doSomething like this:

public class MyClass {
public static doSomething() {
System.out.println("hello");
}
}

I can call this from another class as such: MyClass.doSomething();

[shanePreater]

Remember though that if you are going to make the method static any member variables that you use with in the method will also need to be static

For example:
In your code I would assume that internally you are using a collection so:

Code:

public class CatCollection
{
        private static List<Cat> cats = new ArrayList<Cat>;

	public CatCollection()
	{
		.........
	}
	
	public static void addCat(Cat aCat)
	{
		//adds a Cat object to an array in CatCollection
                cats.add(cat);
	}
}

The other thing that you need to bare in mind when doing this kind of operation is that if you do instantiate the CatCollection class there will still only be one instance of the cats collection as it is declared static.