Java ——Scanner

import java.util.Scanner;//导包

public class Demo {

    public static void main(String[] args) {
        //Scanner是Java中输入的一个工具类
        Scanner scanner = new Scanner(System.in);//定义一个Scanner
        
        System.out.println("input your name:");
        String name = scanner.next();//输入字符串
        System.out.println(name);
        
        System.out.println("input your age:");
        int age = scanner.nextInt();//输入整型数字
        System.out.println(age);
        
        System.out.println("input your score:");
        float score = scanner.nextFloat();//输入浮点数
        System.out.println(score);
        
        System.out.println("input your gender:");
        String gender = scanner.next();
        System.out.println(gender);
    }
}