The program should first read the information about the graph from a file. The program prompts the user to enter the file name and read vertices location information into a two-dimensional array named position, where (position[0][0], position[0][1]) is the x- and ycoordinates for vertex 0. For example, in the sample graph, (position[0][0], position[0][1]) is (30, 30). The program reads the edge information into an array of ArrayList named edge (ArrayList is covered in Chapter 11). For example, in the sample graph, edge[0] Is an ArrayList that contains elements 1 and 2, which indicates that vertex 0 is connected to vertex 1 and vertex 2. position and edge should be created as followed: int[][] position = new int[n][2]; ArrayList[] edge = new ArrayList[n]; CS265 Closed Lab 8 2 After the graph information are read into position and edge, we can use these information to display the graph. Define a class named GraphView that extends Pane, as follows: 1. data fields position and edge. 2. a constructor that constructs a GraphView object with the specified position and edge.

A graph consists of vertices and edges that connect vertices. Write a program that reads a graph from a file and displays it on a panel. The first line in the file contains a number that indicates the number of vertices (n). The vertices are labeled as 0, 1, .., n-1. Each subsequent line, with the format v1, v2 , , describes that the vertex u is located at position (x, y) with edges (u, vl),(, y2), etc. Figure (a) gives an example of the file for a graph. Your program prompts the user to enter the name of the file, reads data from the file, and displays the graph on a panel, as shown in Figure (b). Exercise14 09 File 0 30 30 1 2 1 90 30 0 3 2 30 90 0 3 4 3 90 90 1 2 4 5 4 30 150 2 3 5 5 90 150 3 4 The program reads the information about the graph and displays it visually