利用SCANNER写一道小题

利用SCANNER写一道小题

package Scanner;

import java.util.Scanner;

public class Demo03 {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        int i = 0;
        float f = 0.0f;
        System.out.println("请输入整数");

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

        System.out.println("请输入小数");

        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();
    }
}