给个JAVA程序在1到20里随机产生5个数字

Math.Random

package JavaQ;
import java.util.Random;

public class RandomNumbers {
public static void main(String[] args) {
Random generator = new Random();
int num[] = new int[5];
for (int i = 0; i < num.length; i++) {
num[i] = generator.nextInt(20);
System.out.println("From 0 to 20:" + num[i]);
}
}