Scanner Demo04

package Scanner;

import java.util.Scanner;

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

        //从键盘就收数据
        int i =0;
        float f=0.0f;

        System.out.println("请输入整数");

        //如果......那么
        if (scanner.hasNextInt()){
            int i1 = scanner.nextInt();
            System.out.println("小数数据："+i);
        }else{
            System.out.println("输入的不是小数数据");
        }
        System.out.println("请输入小数");

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



        scanner.close();

    }
}