Verified answer

package com.znanija;

import java.util.Scanner;

import java.util.Random;

public class Name {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

Random rand = new Random();

int[] [] massive = new int[100][100];

for (int i=0;i<100;i++)

for (int k=0;k<100;k++)

massive[i][k] = rand.nextInt(1000)+1;

int count=0; int num= in.nextInt();

for (int i=0;i<100;i++)

for (int k=0;k<100;k++)

if (massive[i][k] == num)

count+=1;

System.out.print("Число " + num + " встречается в матрице " + count + " раз(а)") ;

}

}