storage/logs/laravel.log" could not be opened: failed to open stream: Permission denied
$ chmod -R 775 storage bootstrap/cachestorage/logs/laravel.log" could not be opened: failed to open stream: Permission denied
$ chmod -R 775 storage bootstrap/cachelaravel logs
use Illuminate\Support\Facades\Log;
// Severity levels base on RFC5424 commented on the right side
Log::emergency($message); // system is unusable
Log::alert($message); // action must be taken immediately
Log::critical($message); // critical conditions
Log::error($message); // error conditions
Log::warning($message); // warning conditions
Log::notice($message); // normal but significant condition
Log::info($message); // informational messages
Log::debug($message); // debug-level messages
// Checkout RFC5424 here - https://tools.ietf.org/html/rfc5424laravel logs
Log::info('This is some useful information.');
Log::warning('Something could be going wrong.');
Log::error('Something is really going wrong.');how to get random number in java in range
package com.mkyong.example.test;
import java.util.Random;
public class TestRandom {
public static void main(String[] args) {
for (int i = 0; i < 10; i++) {
System.out.println(getRandomNumberInRange(5, 10));
}
}
private static int getRandomNumberInRange(int min, int max) {
if (min >= max) {
throw new IllegalArgumentException("max must be greater than min");
}
Random r = new Random();
return r.nextInt((max - min) + 1) + min;
}
}java math random
// Math.random() returns a random number between 0.0-0.99.
double rnd = Math.random();
// rnd1 is an integer in the range 0-9 (including 9).
int rnd1 = (int)(Math.random()*10);
// rnd2 is in the range 1-10 (including 10). The parentheses are necessary!
int rnd2 = (int)(Math.random()*10) + 1;
// rnd3 is in the range 5-10 (including 10). The range is 10-5+1 = 6.
int rnd3 = (int)(Math.random()*6) + 5;
// rnd4 is in the range -10 up to 9 (including 9). The range is doubled (9 - -10 + 1 = 20) and the minimum is -10.
int rnd4 = (int)(Math.random()*20) - 10;random in java a to b
Min + (int)(Math.random() * ((Max - Min) + 1))Copyright © 2021 Codeinu
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