Question

1. Creatc a lava program thal asks the user to cnter his/her first name and last namc, in a single linc and separaled by a spacc. The program should output separately the first namc and the last name. (Use the Scanner class.) 2. Create a Java program thal asks the user for a medium (air, water or sleel), and outputs the speed of sound in thal medium (1 100 feclsec in air, 4900 feesec in water and 16,400 feet sec in steel). Use the Scanner class to read the input and a switch statement to implement the decision structure. 3. Create a Java program that formats the number 123456789.1234567890 using the DecimalFormat class and the printfmcthod as: 123456789.1 123,456,789.12 123,456,789.123 4. Create a Java program that asks for the names of three runners and the time, in minutes, it took each of then to finish a race. The program should display the names of the runn ers in the order they finished. 5. Create a lava application that asks a user o enter the namc of a menu ilem, the number olf gras f at, the number of gras of procin, and the numbcr of grams of carbohydrates the item contains. The program should display the total number of calories in the item, as well as the percent of calories that come from fat. Use the following information to perform the calculations. I gram fat=9 calories; I gram carbohydrate-4 calories; I gram protein 4 calories A bank charges a base fec ofS10 per month, plus the following chcck fees for a commercial banking account: 6. S.10 each for less than 20 checks $.08 cach for 20-39 checks S.06 cach 40-59 checks S.04 each for 60 or more checks Create a Java application that asks for the number of checks written for the month. The application should then calculate and display the bank's services tees for the month.

Answer 1

if you post more than question, as per HomeworkLib guideliens we have to solve only first question.

Ques 1.

import java.util.*;

public class Solution

{

    public static void main(String[] args)

    {

        // create a Scanner class object to get user input

        Scanner sc = new Scanner(System.in);

       

        System.out.print("Enter first name and last name seprated by space : ");

       

        // read complete line using nextLine()

        String name = sc.nextLine();

       

        // split the string using split() function wuth space as delimeter

        // arr[0] sores first name

        // arr[1] sores last name

        String[] arr = name.split(" ");

       

        String fname = arr[0];

        String lname = arr[1];

       

        System.out.println("\nFirst Name : " + fname);

        System.out.println("Last Name : " + lname);

    }

}

Sample Output