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:

(Recommended tutorial: java course)

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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