It sounds like all of the objects in each of your ArrayLists are linked together, pointing to the same object; so when you modify one, you modify the other. When you add the values to the ArrayList, you have to make sure that you are passing a new version of each object, not the same object. It would help to see more of your code.

BTW: To format code correctly, paste it first, highlight it all, and select format code.

calsign is right in that lockWeightBV and bezierVertexes actually the same ArrayList.

I suspect that lockWeightBV is supposed to be a copy of bezierVertexes. Somewhere in your code you will have something like

// attempt to copy bezierVertexes
lockWeightBV = bezierVertexes;  // this will not fail to make a copy

To copy the ArrayList use

lockWeightBV = new ArrayList<BezierVertex>(bezierVertexes);

This will make a copy of the arraylist object. You now have 2 arraylists that reference the same BezierVertex objects but changes to one arraylist does not affect the other.

 

BTW: To format code correctly, paste it first, highlight it all, and select format code.

 

I did

And i had:

 

public ArrayList<BezierVertex> getBezierVertexes() {

return bezierVertexes ;

}

But that had to be with your thing:

new ArrayList<BezierVertex>(bezierVertexes);

thanks.