java.netbeans

please i need help on my assignment

Problem Description

This assignment is a hand-on Arrays and Array list. Given the following Point class.

public class Point { private double x,y; public Point(){} public Point(double x, double y){ setPoint(x,y);} public void setPoint(double x, double y){

this.x = x; this.y = y; }

public double getX(){ return this.x;} public double getY(){ return this.y;} public double distance(Point p){

return Math.sqrt( Math.pow(p.x-x,2)+ Math.pow(p.y-y,2)); }

public boolean isDifferent(Point p){ return this.x!=p.x || this.y !=p.y

}

public String toString (){ return "(" + x+ "," + y + ")"; } }

Q1. Define a class Assignment2 in which it has the main method as follows:

1- Define an array list of Points, call it pList

2- Add 10 random point objects (coordinates of each point is between [-10,10] ) to the

pList

3- Add the point (2,4) in the middle and at the beginning of pList

4- Add the point (5,6) just before the last occurrence of point (2,4).

(Hint: calculate the position of (2,4) using lstIndexOf and then add (5,6) before it.

5- Print the list and see if addition is correct.

6 -Print the centroid of pList (See method developed in Q2).

7- Print the centroid of all points that are laying in the first quadrant. (use methods

developed in Q2 and Q3).

8- Remove the last occurrence of the point (2,4).

9. Reverse the elements of pList.

Q2. Write a method that takes an array list of Points (lst) and calculates and returns the centroid point. Centroid point is calculated as follows:

X coordinate of centroid = average values of x-coordinates of all points in the list. Y coordinate of centroid = average values of y-coordinates of all points in the list.

Q3. Write a method that takes an array of Points (arr) and returns all points that are laying in the first quadrant.