Exercise $3$: ArrayLists of Objects

Redo exercise $2,$ but with the Line objects stored in a java.util.ArrayList instead of a raw array of Line objects. So the methods become:

public Line longestLine$($ ArrayList lineList $)$:

Returns the Line with maximum length. If there are multiple Lines that tie for the longest length, it may return any one of those Lines.

public void deleteOriginLines$($ ArrayList lineList $)$:

Deletes every Line that starts or ends at point $(0,0).$

See attached of exercise $2.$