java从控制台输入

//引入Scanner包

import java.util.Scanner;

public class Walk {

public static void main(String[] args) {

//定义Scanner

Scanner in = new Scanner(System.in);

System.out.println("please enter n:");

                        //输入内容为int

int n = in.nextInt();

System.out.println(n);

System.out.println("please enter instruction:");

                        //输入内容为string

String s = in.next();

System.out.println(s);