Scanner使用(4)

package com.chen.scanner;

import java.util.Scanner;

public class Demo04 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        //从键盘接收数据
        int i = 0;
        float f = 0.0f;

        System.out.println("请输入整数：");

        //如果...那么
        if(scanner.hasNextInt()){
            i = scanner.nextInt();
            System.out.println(i);
        }else {
            System.out.println("输入的不是整数数据！");
        }

        System.out.println("请输入小数：");

        //如果...那么
        if(scanner.hasNextFloat()){
            f = scanner.nextFloat();
            System.out.println(f);
        }else {
            System.out.println("输入的不是小数数据！");
        }

        scanner.close();
    }
}