Write A Java Program That Reads A Positive / Non-zero Integer As Input

Aug 1, 2011

Write a Java program that reads a positive, non-zero integer as input and checks if the integer is deficient, perfect, or abundant.

A positive, non-zero integer, N, is said to be perfect if the sum of its positive proper divisors (i.e., the positive integers, other than N itself, that divide N exactly) is equal to the number itself. If this sum is less than N, the number is said to be deficient. If the sum is greater than N, the number is said to be abundant.For example, the number 6 is perfect, since 6 = 1 + 2 + 3, the number 8 is deficient, since 8 > 1 + 2 + 4, while the number 12 is abundant, since 12 < 1 + 2 + 3 + 4 + 6.

SAMPLE OUTPUT:

1.)Input N: 5

5 is deficient.

2.)Input N: 6

6 is perfect.

3.)Input N: 18

18 is abundant.

View Replies


ADVERTISEMENT

Write A Statement That Reads User Input Integer Into Defined Variable

Jan 20, 2015

so i'm following a java tutorial from the book and it has a few challenge questions. and i'm stucked on one. i think i just don't understand what is it that its asking me. heres the question, Write a statement that reads a user's input integer into the defined variable, and a second statement that prints the integer. assuming scanner is given, and i checked my heading code is ok.
 
Scanner scnr = new Scanner(System.in);
int userNum = 0;
System.out.println("What is the product of 8 time 2");
userNum = scnr.nextInt();

[code]....

View Replies View Related

Write A Program That Reads From User Several Lines Of Input

Mar 24, 2014

a. Assume that we have a list of employees' names of a company and their ages. Write a program that reads from the user several lines of input. Each line includes an employee's name and his/her age (as an integer). The program should calculate and print the following:

- The average age of all employees (rounded to 2 decimal places).
- The oldest employee and his/her age.

Hints:

You could assume that the user will insert valid data and at least one employee.
You could assume that the oldest employee is only one person.
User could stop the program via entering the word "end" as an employee's name.

Sample Input and Output: In each line, insert an employee's name and his/her age To halt the program, insert "end" as an employee's name

Adam 30
Tom 41
Ted 45
Karl 30
end

The average age of all employees is 36.50.The oldest employee is Hisham whose age is 45

View Replies View Related

Program That Accept Input Of Positive Integer And Sum All Digits

Jan 28, 2015

I am attempting to write a program that accepts input of a positive integer, reports each digit and then the sum of all digits. This is what I have so far:

*/
 package numbersum;
import java.util.*; 
public class Week4NumberSum {
static Scanner console = new Scanner(System.in); 
/**
* @param args the command line arguments

[Code]...

It works if I enter 1234567891 (10 digits)
Enter a positive integer: 1234567891
digit: 1
digit: 2
digit: 3
digit: 4
digit: 5
digit: 6
digit: 7
digit: 8
digit: 9
digit: 1

The sum of the digits is 46

But if I enter 11 digits, it fails:

Enter a positive integer: 123456789123 (12)
Exception in thread "main" java.util.InputMismatchException: For input string: "123456789123"
at java.util.Scanner.nextInt(Scanner.java:2123)
at java.util.Scanner.nextInt(Scanner.java:2076)
at week4numbersum.Week4NumberSum.main(Week4NumberSum. java:26)

java - Scanner error with nextInt() - Stack Overflow gives me some infor for InputMismatchException - which I find described as In order to deal with this exception you must verify that the input data of your application meet its specification. When this error is thrown, the format of the input data is incorrect and thus, you must fix it, in order for your application to proceed its execution.

I don't understand why the 10 digit integer is OK but the 11 or > digit integer is a mismatch.

View Replies View Related

Write A Java Program That Reads 5 Integers

Oct 9, 2014

Project is due before midnight eastern time (3 more hours). I have been working on this all day, we have not learned arrays or anything and just started 'for' loops. I don't really know how to implement that system yet. However, he wants us to check all the possible handwritten math ways of doing this. I have tried but I cannot return my numbers beside the card.my program only prints the type and I still have more cases to add as well..

QUESTION: Write a Java program that reads 5 integers, each of which is in the range of 1 and 13 representing a simplified poker card with no suit. Your program should then print the ranking of the hand with card number(s) beside the ranking. The rankings to determine are Four of a Kind(4 of the 5 cards of the same rank), Full House(3 of the 5 cards of the same rank, and 2 cards of another rank), Straight(5 cards of sequential rank), Three of a Kind(only 3 cards of the same rank), Two Pair(2 cards of the same rank, 2 cards of another rank, and no card of either rank), One Pair(only 2 of 5 cards are of the same rank), and High Card(no two cards of the same rank). Some sample runs are:

input: 2, 3, 2, 2, 2; output: Four of a Kind(2)
input: 2, 3, 2, 3, 2; output: Full House(2, 3)
input: 2, 3, 4, 5, 1; output: Straight(5)
input: 1, 13, 11, 10, 12; output: Straight(1)

[code]....

View Replies View Related

Input Validation - Where Condition Is A Word From Set And Value Is A Positive Integer

Mar 18, 2015

I am trying to create a program that first asks the user for an input in the form: condition = value, where condition is a word from the set {limit, deficient, abundant, perfect, prime}, and value is a positive integer. Then it verifies the input. If the input is invalid it prints a message indicating that and terminates. If the input is valid it prints a table with the number of abundant, deficient, perfect and prime numbers less than or equal to N, where N = 1, 2, 3, ..., limit.

My problem is with the input validation. i want it to read the value as a string and verify if it's integer.

Here is my code

import java.util.Scanner;
 public class Factors
{
public static void main (String[] args)
{
Scanner scan = new Scanner(System.in);
int n, f, fsum, p=0, a=0, d=0,pe=0,limit=0,abundant=0, deficient=0;
System.out.print("Enter stoping condition (condition = value): ");
String cond = scan.next();

[Code] ....

View Replies View Related

Write A Program For Converting Positive Binary Inputs Into Hex

Sep 29, 2014

I am trying to write a program for converting positive binary inputs into hex.Why am i getting this errors while compiling my binary to hex converter..

Exception in thread "main" java.lang.NumberFormatException: For input string: "148.0"
at java.lang.NumberFormatException.forInputString(Num berFormatException.java:65)
at java.lang.Long.parseLong(Long.java:441)
at BinToHex.convertbintohex(BinToHex.java:24)
at Test.main(Test.java:4)

Here is my BinToHex class

import java.io.*;
public class BinToHex {
double tempDec,fractionpart;
long longofintpart,templongDec;
String inpu ="1001.01";
String hexOutput,intpart,tempDecString,hex = null;

[code]....

View Replies View Related

Write A Program That Prompts User To Enter Two Positive Integers And Prints Their Sum

Jan 9, 2015

Write a program (TwoIntegers.java) that prompts the user to enter two positive integers and prints their sum (by addition), product (by multiplication), difference (by subtraction), quotient (by division), and remainder (by modulation). When the user enters 5 and 3, the output from your program should look exactly like the following:

Enter two positive integers: 5 3
The sum is 8.
The product is 15.
The difference is 2.
The quotient is 1.
The remainder is 2.

import java.util.Scanner;
public class TwoIntegers {
public static void main(String[] args) {
System.out.println("Enter two positive integers: ");
Scanner userInput = new Scanner("System.in");
int integer1 = userInput.nextInt();
int integer2 = userInput.nextInt();

[code]....

View Replies View Related

Write A Java Program To Input 7 Integers?

Feb 21, 2015

Design, write a java program to input 7 integers and, for each integer, calculate and display its square and cube.

View Replies View Related

Write A Java Program Which Display To Get GPA Of A Student As Keyboard Input

Feb 15, 2015

I want to write a java program which displays to get the GPA of a student as a keyboard input. Then display the class of the degree according to the following criteria using a switch-case statement (if-else statements cannot be used). If the user insert an invalid gpa you should display a message Invalid GPA.

gpa ≥ 3.50 First Class Hons
3.49 ≥ gpa ≥ 3.00 Upper Second Class Hons
2.99 ≥ gpa ≥ 2.50 Lower Second Class Hons
2.49 ≥ gpa ≥ 2.00 Pass
2.00 ≥ gpa Fail

Here is my code:

import java.io.*;
public class q7
{
public static void main(String[] args)
{
InputStreamReader ISR=new InputStreamReader(System.in);
BufferedReader BR=new BufferedReader(ISR);
 
[code]...

.But when I use Command console to run this it says: 1111.jpg. I also wanna know is there another way to do this with switch- case statements.

View Replies View Related

Write A JAVA Program That Will Input 10 Scores And Output Highest And Lowest Score

Jan 9, 2015

1.Write a JAVA program that will input 10 scores and output the Highest and Lowest score.

2.Write a JAVA program that will input the base and power and display the result: Example: Base is 4 Power is 2 the answer is 16 (Note: Math.pow( ) method is not allowed)

3.Write a JAVA program that will input an integer number, and then will output the sum of all inputted numbers. The program will stop in accepting inputs if the user entered 0.

View Replies View Related

Java Program That Reads Array From Text File

Mar 19, 2015

I was wondering if it's possible to do this: I want to build a java program that reads a java array from a text file.

Then I want to read it, and output it in a different format.

The reading and out is easy - as text.

But how can I incorporate the read text in to a java valid array in my program, which I can use?

Is this even possible?

View Replies View Related

Write Application That Reads Five Integers

Jun 12, 2014

Write an application that reads five integers, determines and prints the largest and smallest integers in the group. Use only the programming techniques you learned in this chapter. (which means: use only if statements and the equality and relational operators).If I want to solve this I will write nested if statements for every probability like the following.The probability: the first integer is the largest and the fifth integer is the smallest:

1>2>3>4>5
1>2>4>3>5
1>4>3>2>5
1>4>2>3>5
1>3>4>2>5
1>3>2>4>5

And so on for every probability.

View Replies View Related

Write A Program To Create Integer Array Of Size 20

Aug 2, 2014

Write a program to create an integer array of size 20. Then, the program should generate and insert random integers between 1 and 5, inclusive into the array. Next, the program should print the array as output.

A tremor is defined as a point of movement to and fro. To simulate it, the program will generate a random number between 0 and 19, which represents the location in the array (i.e. index number). Then, the 3 numbers to the left and right of this location should be reset to the value 0. If there isn't 3 numbers to the left and right you may assume a lesser number depending on the boundaries of the array.

Then, the final array should be printed as output. There is no user input for this program.Your program must include, at least, the following methods:

-insertNumbers, which will take as input one integer array and store the random numbers in it.
-createTremor, which will generate the random number as the location and return it.

A sample run of the program is shown below:

Sample output #1:
Array:1 2 2 3 1 5 4 2 3 4 4 2 1 1 3 2 1 4 3 2 1
Random position: 5
Final Array:1 2 0 0 0 5 0 0 0 4 4 2 1 1 3 2 1 4 3 2 1

View Replies View Related

Write A Program That Read Integer And Display Diamond

Oct 14, 2014

Write a program that reads an integer and displays, using asterisks, a filled diamond of the given side length. For example, if the side length is 4 the program should display.

*
***
*****
*******
*****
***
*

I have it where it displays the top half of the diamond. But i cannot figure out how to get it to draw the bottom half.

import java.util.*;
public class E616 {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.print("Enter number of rows. ");
int N=input.nextInt();

[code]...

View Replies View Related

Calculate The Factors Of A Positive Integer Number

Mar 16, 2014

lines 7, 8, &12 "primes" are underline in red (prime cannot be resolved) is what pops up when i hover over the x's.

i don't get why that is.

package assignment7;
public class Exercise3
{
public static void main(String[] args)
{
Prime.setSize(1000);
for (int p = Primes.next(); p < 30; p = Primes.next())

[Code]...

View Replies View Related

Calculate Factors Of Positive Integer Number

Mar 17, 2014

Lines 7, 8, &12 "primes" are underline in red (prime cannot be resolved) is what pops up when i hover over the x's.

I don't get why that is.

Java Code :

public class Exercise3
{
public static void main(String[] args) {
Prime.setSize(1000);
for (int p = Primes.next(); p < 30; p = Primes.next()) {
int n = (int)Math.round(Math.pow(2,p)) - 1;
System.out.printf("%d 2^%d-1%d", p, p, n);
if (Primes.isPrime(n))

[Code] ....

View Replies View Related

Program For Converting Positive Binary Inputs Into Hex - Unexpected Output Java

Sep 30, 2014

I am trying to write a program for converting positive binary inputs into hex. in the hex output the point (".")is missing.

Suppose my expected output is e7.6 , but i am getting e76.

Only the "." is missing.

Here is my BinToHex class..

import java.io.*;
public class BinToHex {
double tempDec,fractionpart;
long longofintpart,templongDec;
String inpu ="11100111.011";
String hexOutput=null,tempDecString,hex = null;
 
[Code] .....

Here is how decimal fraction is converted into hex or here too...

View Replies View Related

Read Positive Integer N And Plot 3 Triangles Of Size N

Oct 10, 2014

Write a Java program that reads positive integer n, 1 ≤ n ≤ 13, and plots 3 triangles of size n as shown below.

For n = 4, for instance, the program should plot: (works for n = 5 and n = 6 etc.)

triangle 1

1
2 3
4 5 6
7 8 9 10

triangle 2

_ _ _ 1
_ _ 3 2
_ 6 5 4
10 9 8 7

triangle 3

_ _ _ 1
_ _ 3 3 3
_ 5 5 5 5 5
7 7 7 7 7 7 7

import java.util.Scanner;
class Loops { 
void plotTriangle1(int n) {
int t = 1;
for (int i = 1; i <= n; i++) {
System.out.println(" ");
for (int j = 1; j <= i; j++) {
System.out.printf("%3d", t++);

[Code] ....

Currently compiles to this: Enter n(1-13):4
1
2 3
4 5 6
7 8 9 10

Format of the triangles, I couldn't get the spacing to work so I used underscores to replicate the blank space....

View Replies View Related

Write A Program That Asks Users To Input 5 Test Scores

Apr 22, 2015

Write a program that asks the user to enter five test scores. The program should display a letter grade for each score and the average test score. Write the following methods in the program:

calculateAverage This method should accept five test scores as arguments and return the average of the scores. determineGrade This method should accept a test score as an argument and return a letter grade for the score, based on the following grading scale

Score Letter Grade
90-100 A
80-89 B
70-79 C
60-69 D
Below 60 F

double test1,test2,test3,test4,test5;
double average;
char grade;

Scanner keyboard = new Scanner(System.in);

System.out.println("Enter the first score");
test1 = keyboard.nextDouble();
System.out.println("Enter the second score");
test2 = keyboard.nextDouble();

[code]....

View Replies View Related

Program Prompt For Input File / Take Its Info And Write To Report - Nullpointer Exception

Apr 17, 2014

I've got a nasty nullpointer that I have tried to resolve to no avail as of yet. The program should prompt for a listings.txt file and take its info and write to a report file. Here's the stacktrace:

run:

Input file: listings
Exception in thread "main" java.lang.NullPointerException
at java.io.Writer.<init>(Writer.java:88)
at java.io.PrintWriter.<init>(PrintWriter.java:113)
at java.io.PrintWriter.<init>(PrintWriter.java:100)
at kettask2b.PropertyListingsReport.main(PropertyListingsReport.java:34)
Java Result: 1

Some adjustments that I have attempted are:

BufferedWriter pwfo = null;
for (int i = 0; i < args.length; i++) {
String string = args[i];
pwfo = null;

[Code] ....

Here's the code:

package kettask2b;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

[Code] ....

View Replies View Related

How To Check Input Is Integer In Java

Dec 18, 2014

I have to ask how many children's tickets you want to order. When I apply the code below, it just accepts whatever I input, including letters. I imagine it is to do with setting childrensTickets = 0? If I input a letter using the below it accepts - shouldn't it print the error given the input is not >=0?

System.out.print("How many children's tickets do you require? ");
int childrensTickets = 0;
boolean validChildrenValue = false;
while (validChildrenValue == false) {
if(aScanner.hasNextInt()) {

[Code] ....

View Replies View Related

Write A Java Program That Uses A While Loop

Apr 9, 2014

Write a java program that uses a While loop and persistent output to count down from 33 to 0 by threes, and put each value on a separate line, also do this in for loop.

View Replies View Related

Java Program To Convert Integer To Roman Numbers And Vice Versa?

Aug 20, 2014

java program to convert integer to Roman numbers and vice versa?

View Replies View Related

Algebra - Perfect Square Java Program / Find Smaller Integer N

Sep 22, 2014

Write a program that prompts the user to enter an integer m and find the smallest integer n such that m * n is a perfect square. (Hint: Store all smallest factors of m into an array list. n is the product of the factors that appear an odd number of times in the array list. For example, consider m = 90, store the factors 2, 3, 3, 5 in an array list. 2 and 5 appear an odd number of time in the array list. So, n is 10.)

so far my program is just like this.

import java.lang.Math;
import java.util.Scanner;
public class PerfectSquare {
public static void main(String[] args) {
Scanner m = new Scanner(System.in);
int Fint;

[Code] .....

how do i make the program find the smallest integer n?

View Replies View Related

Create And Write To A Excel File From A Java Program?

Jul 10, 2007

I want to create and write to a excel file from a java program. I found a tutorial online and wrote a java file as under:

Java Code: import java.io.File;
import java.util.Date;
import jxl.*;
import jxl.write.*;
public class jExcel{
WriteableWorkbok workbook = Workbok.createWorkbook(new File("output.xls"));
public static void main(String args[]){
WriteableSheet sheet = workbook.createSheet("First Sheett",0);
Label label = new Label(0,2,"A label record");
sheet.addCell(label);

[code].....

But when I compile this file, I get errors telling that package jxl does not exists and so on. Do I need to download it ?

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved