nodes[x][y].getConnections().add(new DefaultConnection<MyNode>(nodes[x][y], nodes[x - 1][y])); nodes[x][y].getConnections().add(new DefaultConnection<MyNode>(nodes[x][y], nodes[x + 1][y])); nodes[x][y].getConnections().add(new DefaultConnection<MyNode>(nodes[x][y], nodes[x][y - 1])); nodes[x][y].getConnections().add(new DefaultConnection<MyNode>(nodes[x][y], nodes[x][y + 1]));