Scanner 机器人（3）-数据类型 int, float,double

package text1;

import java.util.Scanner;

public class Demo07 {
	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：");
		scanner.close();
	}

}