Scanner数据输入: 导包: import java.util.Scanner; 创建对象: Scanner sc = new Scanner(System.in); 接受数据: int x = sc.nextInt(); */ import java.util.Scanner; public class Demo01 { public static void main(String[] args) { //创建对象 Scanner sc = new Scanner(System.in); //接受数据 int x = sc.nextInt(); //输出数据 System.out.println("x:"+x);