The method of obtaining random number Random class object method java 0913

The method of obtaining random number Random class object method java 0913

Random class

Instantiate this class to get an object

Use object methods to get integers

Code

import java.util.Random;

public class test {
    
    
    public static void main(String[] args) {
    
    

        Random random = new Random();
        // 测试随机出来的结果范围
        for(int i=0;i<20;i++){
    
    
            int res = random.nextInt(3);
            System.out.print(res);
        }

    }
}

effect

22012221000112211022

in conclusion

NextInt of the random object (integer parameter)

Can get 0 to integer parameter -1, integer

video

https://www.ixigua.com/6871841743608906254?logTag=HyaquIQxNlY-Nj0FpsOqo