How to use random class to generate random numbers in java

Java uses the random class to generate random numbers: 1. Import the java.util.Random package; 2. Create a Random object; 3. Call the nextInt() function to generate random numbers.

The java.util.Random class is used to generate random numbers. Need to import package:

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import java.util.Random;

Code implementation:

import java.util.Random; public class RandomUtil { /** * nextInt(num) 产生[0 ~ (num-1)]的随机数, 闭区间 * @param Min * @param Max * @return */ public static int getRandomInt(int Min , int Max){ Random rand = new Random(); return rand.nextInt(Max - Min + 1) + Min; } }

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