How to remove a specific object from an Arraylist

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6

That’s right!

My answer was a bit too short.

For example you for loop over all rubbish:

When the Distance to the mouse is < 18 (use dist() command) set a marker boolean isDead (which is in the class) to true (initially in the class say boolean isDead=false;).

Remove from the ArrayList

Now later in draw() you for-loop over the rubbish backwards and check isDead:

for(int i=list.size()-1; i >= 0; i--) { 
    Rubbish item=list.get(i); ` 
    if (item.isDead) 
        list.remove(i);
}

Chrisir