用java实现随机输出1个[e, f)的数字

sourcer code
package com.demo;

import java.util.Random;
import java.util.Scanner;

public class Demo1 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入第一个数字");
int num1 = scanner.nextInt();
System.out.println("请输入第二个数字，第二个数字必须大于第1个数字");
int num2 = scanner.nextInt();
int rand = new Random().nextInt(num2 - num1)+num1;
System.out.println(rand);

}

}