将输入到屏幕上的字符串或数字输出的方法

➊扫描器 scanner = new 扫描器();

➋字符串 名字 = scanner.下一行(); // 输入字符串

➌整数 年龄 = scanner.下一个整数(); // 输入数字

2. 源代码（从显示器输入，并输出到显示器）

import java.util.Scanner;

class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        System.out.println("What is your name?");
        String name = scanner.nextLine();

        System.out.println("How old are you?");
        int age = scanner.nextInt();
        scanner.nextLine();

        System.out.println("What is your favorite food?");
        String food = scanner.nextLine();

        System.out.println("Hello " + name);
        System.out.println("You are " + age + " years old");
        System.out.println("You like " + food);
    }
}

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