Please modify this"Random Surfer" program in Java.

Modifications- Identify if there is a potential spider trap in your data and print a warning at the end of your program. You must identify all the conditions needed for a trapping to occur and their reflection in input and output data. Comment your code explaining what each new fragment is doing.

Program starts-->

import edu.princeton.cs.introcs.StdIn;

import edu.princeton.cs.introcs.StdOut;

public class RandomSurfer {

public static void main(String[] args) {

//Simulate random surfer.

int trials = Integer.parseInt(args[0]); // number of moves

int n = StdIn.readInt(); // number of pages

StdIn.readInt();

StdOut.print(" No.of pages="+n); // Printing the value of N i.e. no. of pages

System.out.println();

// Reading the transition matrix.

double[][] p = new double[n][n]; // p[i][j] = prob. that surfer moves from page i to page j

for (int i = 0; i < n; i++)

for (int j = 0; j < n; j++)

p[i][j] = StdIn.readDouble();

int[] freq = new int[n]; // freq[i] = no. of times surfer hits page i

// Start at page 0.

int page = 0;

for (int t = 0; t < trials; t++) {

// Making one random move to the next page.

double r = Math.random();

double sum = 0.0;

for (int j = 0; j < n; j++) {

// computing the interval that contains r.

sum += p[page][j];

if (r < sum) {

page = j;

break;

}

}

freq[page]++;

}

System.out.println("Page ranks :");

// Printing the page ranks.

for (int i = 0; i < n; i++) {

StdOut.printf("%8.5f", (double) freq[i] / trials); // Computing probability by dividing count by the no. of moves

}

StdOut.println();

} }