1. F ill up statements in the following program which called KeyboardInput, to prompt user to input an int, a double, and a String. The output shall look like this (the inputs are shown in red cycles ): import java.util.Scanner; //导入所需类用以键盘读取：Scanner类public class KeyboardInput{public static void main(String[] args){int num1;double num2;String name;double sum;//实例化Scanner对象in，用以读取键盘输入，(System.in)固定用法Scanner in = new Scanner(System.in);_____ = in.nextInt(); //通过对象in调用nextInt()方法读取整型数据______________________________________________________ = in.nextDouble(); //调用nextDouble()方法读取浮点数据______________________________________________________ = in.next(); //调用 next()方法读取字符串数据//输出语句_________________________________________________}}