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- /*
- 如何从键盘获取不同类型的变量:需要使用Scanner类
- 具体实现步骤:
- 1、导包:import java.util.Scanner;
- 2、Scanner的实例化:Scanner scan = new Scanner(System.in);
- 3、调用Scanner类的相关方法(next()/nextXxx()),来获取指定类型的变量
- */
- //1、导包:import java.util.Scanner;
- import java.util.Scanner;
- class ScannerTest{
- public static void main(String[] args){
- //2、Scanner的实例化
- Scanner scan = new Scanner(System.in);
-
- //3、调用Scanner类的相关方法
- System.out.println("请输入你的姓名:");
- //int num = scan.nextInt();
- String name = scan.next();
- System.out.println(name);
- System.out.println("请输入你的年龄:");
- int age = scan.nextInt();
- System.out.println(age);
- System.out.println("请输入你的体重:");
- double weight = scan.nextDouble();
- System.out.println(weight);
- System.out.println("是否中彩票了?(true/false)");
- boolean win = scan.nextBoolean();
- System.out.println(win);
- //对于char型的获取,Scanner没有提供相关的方法,只能获取一个字符串
- System.out.println("请输入你的性别:(男/女)");
- String gender = scan.next();//"男"
- char genderChar = gender.charAt(0);//获取索引为0位置上的字符
- System.out.println(genderChar);
- }
- }
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