public void dispose() { int i, n; if (_sites != null) { _sites.dispose(); _sites = null; } if (_triangles != null) { n = _triangles.size(); for (i = 0; i < n; ++i) { _triangles.get(i).dispose(); } _triangles.clear(); _triangles = null; } if (_edges != null) { n = _edges.size(); for (i = 0; i < n; ++i) { _edges.get(i).dispose(); } _edges.clear(); _edges = null; } _plotBounds = null; _sitesIndexedByLocation = null; }