write all answers on the paper provided. You do not have to do the problems in o
ID: 3575413 • Letter: W
Question
write all answers on the paper provided. You do not have to do the problems in order, but you must LABEL each problem with the correct problem number. PRINT all code LEGIBLY. X write an assignment statement to compute the gas mileage a car where the int values of miles traveled and gallons needed have already been input. The variable gas mileage needs to be declared and should be a double. V2. Rewrite the following program with proper indentation and formal make it easier to read. public My Program public static void main( Stringl 1 args) System out println( "Wow, this is messed up! 3. Write a set of instructions to prompt theuser for an int value and input it using the Scanner class into the variable x and prompt the user for a float value and input it using the Scanner class into the variable y. upper using three the name as enteredby the user:3) prints the name in all prints the initials of the user. V Write a program reads values representing hours, minutes, and seconds, and prints the total numberExplanation / Answer
Page 1
Questioin 1)
import java.util.*;
//Class Mileage
public class Mileage
{
public static void main(String ss[])
{
//Scanner class object to accept data
Scanner sc = new Scanner(System.in);
double gas_mileage, miles_traveled, gallons_needed;
//Accept data
System.out.println("Enter Miles Traveled: ");
miles_traveled = sc.nextDouble();
System.out.println("Enter Gallons Needed: ");
gallons_needed = sc.nextDouble();
//Calculates the gas mileage
gas_mileage = miles_traveled / gallons_needed;
System.out.println("Millage = " + gas_mileage);
}
}
Output:
Enter Miles Traveled:
1000
Enter Gallons Needed:
10
Millage = 100.0
Question 2)
public class MyProgram
{
public static void main(String [] args)
{
System.out.println("Wow, this is messed up!");
}
}
Output:
Wow, this is messed up!
Question 3)
import java.util.*;
//Class defined
public class MyProgram
{
public static void main(String [] args)
{
//Declaration of variable
int x;
float y;
//Scanner class object created to accept data
Scanner sc = new Scanner(System.in);
System.out.println("Enter a integer value");
//Accepts an integer data
x = sc.nextInt();
System.out.println("Enter a float value");
//Accepts an float data
y = sc.nextFloat();
System.out.println("Integer value = " + x + " Float value = " + y);
}
}
Output:
Enter a integer value
20
Enter a float value
2.3
Integer value = 20 Float value = 2.3
Question 4)
import java.util.*;
//Class defined
public class StringManipulation
{
public static void main(String [] args)
{
//Declaration of variable
String firstName, middleName, lastName;
//Scanner class object created to accept data
Scanner sc = new Scanner(System.in);
System.out.println("Enter First Name: ");
//Accepts first name
firstName = sc.next();
System.out.println("Enter Middle Name: ");
//Accepts middle name
middleName = sc.next();
System.out.println("Enter Last Name: ");
//Accepts last name
lastName = sc.next();
//Display the first, middle and last name
System.out.println("First Name = " + firstName + " Middle Name = " + middleName + " Last Name = " + lastName);
//Display the first, middle and last name in upper case
System.out.println("First Name = " + firstName.toUpperCase() + " Middle Name = " + middleName.toUpperCase() + " Last Name = " + lastName.toUpperCase());
//Display the first, middle and last name initials
System.out.println("First Name = " + firstName.charAt(0) + " Middle Name = " + middleName.charAt(0) + " Last Name = " + lastName.charAt(0));
}
}
Output:
Enter First Name:
Pyari
Enter Middle Name:
Mohan
Enter Last Name:
Sahu
First Name = Pyari
Middle Name = Mohan
Last Name = Sahu
First Name = PYARI
Middle Name = MOHAN
Last Name = SAHU
First Name = P
Middle Name = M
Last Name = S
Question 5)
import java.util.*;
//Class defined
public class Time
{
public static void main(String [] args)
{
//Declaration of variable
int hour, min, sec, res;
//Scanner class object created to accept data
Scanner sc = new Scanner(System.in);
System.out.println("Enter Hour: ");
//Accepts Hours
hour = sc.nextInt();
System.out.println("Enter Minutes: ");
//Accepts Minutes
min = sc.nextInt();
System.out.println("Enter Last Name: ");
//Accepts Second
sec = sc.nextInt();
res = sec + (min * 60) + (hour * 60 * 60);
//Display the hours, minutes seconds with total in second
System.out.println("Hour = " + hour + " Minutes = " + min + " Seconds = " + sec + " Total number of Seconds: " + res);
}
}
Output:
Enter Hour:
1
Enter Minutes:
2
Enter Last Name:
30
Hour = 1
Minutes = 2
Seconds = 30
Total number of Seconds: 3750
Page 2
Question 1)
import java.util.*;
//Class Number defination
class Number
{
public static void main(String ss[])
{
int no, co = 0;
char ch;
float sum = 0;
//Scanner class object created to accept data
Scanner sc = new Scanner(System.in);
//Loops till user enters 'n' or 'N'
do
{
//Accepts user choice
System.out.println("Would you like to Continue? (y/n)");
//Extracts statring position
ch = sc.next().charAt(0);
//If choice is 'y' or 'Y'
if(ch == 'y' || ch == 'Y')
{
System.out.println("Enter a number: ");
//Accept number
no = sc.nextInt();
//Calculate sum
sum += no;
//Counter incresed to count number of numbers entered
co++;
}
//If choice is 'N' or 'n' stop entering data
else if(ch == 'N' || ch == 'n')
break;
else
System.out.println("Wrong Choice! ");
}while(true);
//If sum is zero means no number is entered
if(sum == 0)
System.out.println("No value entered");
//Otherwise display the average
else
System.out.println("Average = " + (sum / co));
}
}
Output:
Would you like to Continue? (y/n)
y
Enter a number:
23
Would you like to Continue? (y/n)
y
Enter a number:
25
Would you like to Continue? (y/n)
y
Enter a number:
13
Would you like to Continue? (y/n)
n
Average = 20.333334
Question 2)
import java.util.*;
//Class Range defination
class Range
{
public static void main(String ss[])
{
int no;
//Scanner class object created to accept data
Scanner sc = new Scanner(System.in);
//Loops till user enters number within range 0 and 100
do
{
System.out.println("Enter a number: ");
//Accept number
no = sc.nextInt();
//Checks for the invalid range
if(no < 0 || no > 100)
break;
}while(true);
}
}
Output:
Enter a number:
55
Enter a number:
99
Enter a number:
78
Enter a number:
5
Enter a number:
-1
Question 3)
import java.util.*;
//Class Student definition
class Student
{
//Data member
String name;
double test1, test2;
//Parameterized constructor to initialize data members
Student(String n, double t1, double t2)
{
name = n;
test1 = t1;
test2 = t2;
}
//Returns the name of the student
String getName()
{
return name;
}
//Calculates the average and returns it
double getAverage()
{
return (test1 + test2) / 2;
}
//Accepts the grade
void inputGrades()
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter student grade: ");
char g = sc.next().charAt(0);
}
//Displays the student name and average mark
public String toString()
{
String msg = "";
msg = " Student Name: " + getName() + " Average Mark: " + String.valueOf(getAverage());
return msg;
}
}
class Grades
{
public static void main(String st[])
{
//Creates an object of student with information by calling parameterized constructor
Student ss = new Student("Pyari", 90.22, 80.22);
//Implicitly calls the toString() method to display student information
System.out.println(ss);
}
}
Output:
Student Name: Pyari
Average Mark: 85.22
Question 4)
import java.util.*;
//Class Count Space Vowel defination
class CountSpaceVowel
{
public static void main(String ss[])
{
String data;
//Scanner class object to accept data
Scanner sc = new Scanner(System.in);
System.out.println("Enter a sentence: ");
//Accept a string
data = sc.nextLine();
//Counter for each vowel and space is initialize to zero
int ca = 0, ce = 0, ci = 0, co = 0, cu = 0, cs = 0;
//Loops till end of the string
for(int c = 0; c < data.length(); c++)
{
//Extracts a character from the string
char ch = data.charAt(c);
//Pas the character to switch for checking
switch(ch)
{
//If vowel a
case 'a': case 'A':
//Increase the counter for a
ca++;
break;
//If vowel e
case 'e': case 'E':
//Increase the counter for e
ce++;
break;
//If vowel i
case 'i': case 'I':
//Increase the counter for i
ci++;
break;
//If vowel o
case 'o': case 'O':
//Increase the counter for o
co++;
break;
//If vowel u
case 'u': case 'U':
//Increase the counter for u
ce++;
break;
//If space
case ' ':
cs++;
break;
}
}
//Displays counter for each vowel and space
System.out.println("Number of a = " + ca + " Number of e = " + ce + " Number of i = " + ci + " Number of o = " + co + " Number of u = " + cu + " Number of Space = " + cs);
}
}
Output:
Enter a sentence:
This Is A Demo
Number of a = 1
Number of e = 1
Number of i = 2
Number of o = 1
Number of u = 0
Number of Space = 3
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