Answers for "how to generate random number between two numbers in java"

could not be opened in append mode: failed to open stream: Permission denied

chmod -R 775 storage
chmod -R 775 bootstrap/cache

could not be opened in append mode: failed to open stream: Permission denied

sudo chown -R $USER:www-data storage
sudo chown -R $USER:www-data bootstrap/cache

could not be opened in append mode failed to open stream permission denied

Reference link if giving a permission doesn't solved your issue
https://www.digitalocean.com/community/questions/the-stream-or-file-var-www-html-myscipt-storage-logs-laravel-log-could-not-be-opened-failed-to-open-stream-permission-denied

random number in range java

(int)(Math.random() * ((max - min) + 1)) + min
Copy

random between two numbers java

Random r = new Random();
int low = 10;
int high = 100;
int result = r.nextInt(high-low) + low;

java random number generator 2

long seed = currentSeed;
// reverse the addend from the seed
seed -= addend; // reverse the addend
long result = 0;
// iterate through the seeds bits
for (int i = 0; i < 48; i++)
{
    long mask = 1L << i;
    // find the next bit
    long bit = seed & mask;
    // add it to the result
    result |= bit;
    if (bit == mask)
    {
        // if the bit was 1, subtract its effects from the seed
        seed -= multiplier << i;
    }
}
System.out.println("Previous seed: " + result);