I am asked to write a program that wil generate a random bindary matrix in java

Question

I am asked to write a program that wil generate a random bindary matrix in java and output that array in a txt file.

i wrote the program to generate the random binary array but I cant figure out how to save the outputted matrix to a txt file, any help would be appreciated.

I pasted the program to generate the matrix below

import java.util.Random;

import java.util.Scanner;

import java.io.FileWriter;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.PrintWriter;

import java.io.UnsupportedEncodingException;

public class anothertest {

public static void main(String args[]) throws FileNotFoundException, UnsupportedEncodingException {

Random random = new Random();

int row, col, i, j;

int arr[][] = new int[1000][1000];

Scanner scan = new Scanner(System.in);

System.out.print("Enter # of array rows ");

row = scan.nextInt();

System.out.print("Enter # of array columns ");

col = scan.nextInt();

for (i = 0; i < row; i++) {

for (j = 0; j < col; j++) {

arr[i][j] = random.nextInt(2);

}

}

System.out.print("The Array is : ");

for (i = 0; i < row; i++) {

for (j = 0; j < col; j++) {

System.out.print(arr[i][j] + " ");

}

System.out.println();

}

}

}

Explanation / Answer

import java.util.Random;

import java.util.Scanner;

import java.io.FileWriter;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.PrintWriter;

import java.io.UnsupportedEncodingException;

public class anothertest {

public static void main(String args[]) throws FileNotFoundException, UnsupportedEncodingException {

Random random = new Random();

int row, col, i, j;

int arr[][] = new int[1000][1000];

Scanner scan = new Scanner(System.in);

System.out.print("Enter # of array rows ");

row = scan.nextInt();

System.out.print("Enter # of array columns ");

col = scan.nextInt();

for (i = 0; i < row; i++) {

for (j = 0; j < col; j++) {

arr[i][j] = random.nextInt(2);

}

}

System.out.print("Written in file! ");

try{   

FileWriter fw=new FileWriter("C:\filename.txt");

for (i = 0; i < row; i++) {

for (j = 0; j < col; j++) {

fw.write(arr[i][j] + " ");

}

fw.write(" ");

}

fw.close();   

}catch(Exception e){System.out.println(e);}   

}

}

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