In Java help how to do the binary data file i dont know ihow to do it

$(22\mathrm{.}8)($All prime numbers up to $100,000,000)$ Write a program that finds all prime numbers up to $10,000,000.$ There are approximately $5,761,455$ such prime numbers. Your

program should meet the following requirements:

Your program should store the prime number in a binary data file, named PrimeNumbers.dat. When a new prime number is found, the number is appended to the file.

To find whether a new number is prime, your program should load the prime numbers from the file to an array of the long type of size $10000.$ If no number in the array is

a divisor for the new number, continue to read the next $10000$ prime numbers from the data file, until a divisor is found or all numbers in the file are read. If no divisor is

found, the new number is prime.

$(22\mathrm{.}10)($Number of prime numbers$)$ Write a program that finds the number of prime numbers that are less than or equal to

$10,$

$100$

$1,000$

$10,000$

$100,000$

$1,000,000$

$10,000,000$