i want to add d elements to d arraylist in init method and then retrieve its value in in paint method
how can i do tht?
Label one;
ArrayList a= new ArrayList();
public void init()
{
a.add(20);
one = new Label("hi"]);
add(one);
}
public void paint(Graphics g)
{
one.setLocation(a.get(0),a.get(0)); // also an error comes here
}
> a.add(20);
U cant directly add a primitive datatype to arraylist unless u use jdk 1.5 or above. R u sure u r using jdk1.5 or above?
Since u have not specified the type in the arraylist, it always returns an object.
So a.get(0) will return an object.
> one.setLocation(a.get(0),a.get(0));
Check the parameters of setLocation();
Note : Plz post the exact error message. Also post the code inside tags.
here is the modified code(jdk1.5)
Label one;
ArrayList<Integer> a = new ArrayList<Integer>();
public void init() {
a.add(20);
one = new Label("hi");
add(one);
}
public void paint(Graphics g) {
one.setLocation((Integer) a.get(0), (Integer) a.get(0));
}
one.setLocation((Integer) a.get(0), (Integer) a.get(0));
Why is this cast required if you already have declared ArrayList as follows?
ArrayList<Integer> a = new ArrayList<Integer>();
> Why is this cast required if you already have
> declared ArrayList as follows?
I was thinking the same. I think the cast is superfluous. Not that it does any great harm, just confuses a little.