How To Create And Link Two Classes

i have tried moving the

//create line
Point beginOfLine = new Point(point1, point2);
//ask user for second pair of coordinates
System.out.print("Enter the coordinates for X2 or <Random> or <Exit>:");
userInput=keyboard.nextLine();

code part to another class but nothing..this is what a second class should be doing

1 - Write a java class called Point to represent a 2-D point (With x and y)

- The constructor should take the x & y as double

- The class should have accessor / mutator methods for all coordinates

2 - Write a java class called Line to represent a line (with a starting point and an ending point)

- The constructor arguments are the start and end points

//import utilities to be used in the program
import java.util.Scanner;
import java.util.Random;
public class Point {
//declare variables
private double pointX, difX;
private double pointY, difY;

[code]....