Scanner进阶

Scanner进阶

nextInt(),nextFloat(),hasNextInt(),hasNextFloat(),与之前类似，参照Scanner即可

点击查看代码

        int i = 0;
        float f = 1;

        Scanner scanner = new Scanner(System.in);

        System.out.println("请输入整数：");
        if(scanner.hasNextInt() == true){
            i = scanner.nextInt();
            System.out.println(i);
        }else{
            System.out.println("你输入的不是整数；");
        }

        System.out.println("请输入小数：");
        if(scanner.hasNextFloat()){
            f = scanner.nextFloat();
            System.out.println(f);
        }else{
            System.out.println("你输入的不是小数；");
        }