键盘输入三个数，从小到大输出

/*
编写程序：
    由键盘输入三个整数，分别存入变量num1，num2，num3，
    对它们进行排序（使用if-else ），并且从小到大输出。
*/

import java.util.Scanner;

class IfTest1 {

    public static void main(String[] args){
        
               System.out.println("请输入第一个整数：");
        Scanner scan = new Scanner(System.in);
        int num1 = scan.nextInt();

        System.out.println("请输入第二个整数：");
        int num2 = scan.nextInt();

        System.out.println("请输入第三个整数：");
        int num3 = scan.nextInt();

        if (num1 >= num2) { // 2 1

            if (num3 >= num1) { // 2 1 3
                System.out.println(num2 + "," + num1 + "," + num3);
            } else if(num3 <= num2 ){// 3 2 1
                System.out.println(num3 + "," + num2 + "," + num1);
            } else {
                System.out.println(num2 + "," + num3 + "," + num1);
            }
            
        } else { // 1 2 

            if (num3 >= num2) {
                System.out.println(num1 + "," + num2 + "," + num3);
            } else if (num3 <= num1) {
                System.out.println(num3 + "," + num1 + "," + num2);
            } else {
                System.out.println(num1 + "," + num3 + "," + num2);
            }
        }
    }
}