Create Program That Prompts Input And Creates File With That Input As Name

Jul 14, 2014

So I was going to try to create a program that prompts input and creates a file (That didn't exist before) with that input as name.Then, the program prompts inputs after stating questions such as 1 + 1, then if the user inputs an answer, put "Question # = Correct "or" Wrong.Code SO Far:

Java Code:

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
public class File_Read {
public File_Read() {//File_Read is the Interactive object

[code]....

So that it puts the Correct or Wrong into the file.

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Java Program That Randomly Generates Five-digit Lottery Number And Prompts User For Input

Sep 25, 2014

Write a Java program that randomly generates a five-digit lottery number and prompts the user to enter a five-digit number. Each digit in the number is in the range between 0~9. The program should determine which prize the user wins according to the following rule:

• The user wins the first prize if the user input matches all five digits in the lottery number in exact order.
• The user wins the second prize if the user input matches any four digits in the lottery number in exact positions.
• The user wins the third prize if the user input matches any three digits in the lottery number in its exact position.
• The user wins the fourth prize if the user input matches any two digits in the lottery number in its exact position.
• The user wins the fifth prize if the user input matches any one digit in the lottery number in its exact position.

and here is my code. I cant get it to print the right statements.

import java.util.Scanner;
import java.util.Random;
class Hw5 {
static int getPrize(int g1, int g2, int g3, int g4, int g5,
int u1, int u2, int u3, int u4, int u5) {
//code for determining the prize comparing (g1, g2, g3, g4, g5) to (u1, u2, u3, u4, u5)
if (u1 == g1 && u2 == g2 && u3 == g3 && u4 == g4 && u5 == g5)

[code]....

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Read Input File And Create Output With Anagram For Words In File

Sep 24, 2014

Well my code is supposed to ask for an input file and then (ex: input.txt), read the input file and create an output.txt file with the anagram for the words in the file. Also it should be displayed on the screen. However my code doesn't display the anagram on screen or the output file!

Heres is the code:

import java.io.*;
import java.lang.*;
import java.util.*;

/* This program will read a file given by the user, read the words within the file and determine anagrams of the given words. If the file that the user inputs is empty, then the program will output "The input file is empty."
* The program will read the file line by line, counting the total number of words read. If there are more than 50 words, "There are more than 50 words."
* will be printed, and the program will terminate. After each line is read, the words in the line will be separated,punctuation characters will be removed, and upper case characters will be switched to lower case.
* If any word is larger than 12 characters, that word will not be considered in the total amount of words in the file and it will not be sorted.
* After each word is read, the letters will be sorted and stored into an array containing each
* word's 'signature'. After all the words have been read, words will be printed to the output file on the same line based upon their signature.
*/

public class Anagram {
//Creating constants for maximum words in file and maximum chars in word
public static final int MAX_CHARS = 12;
public static final int MAX_WORDS = 50;

[Code] ....

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Create A Program That Keeps Track Of Information Input By User

Sep 17, 2014

I am new to Java an have to Create a program that keeps track of the following information input by the user: First Name, Last Name, Phone Number, and Age. Now - let's store this in a multidimensional array that will hold 10 of these contacts. So our multidimensional array will need to be 10 rows and 4 columns.You should be able to add and remove contacts in the array.

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Possible To Create Program With JAVA That Uses Algorithm To Summarize Data Input

Jan 23, 2015

So I was just wondering if it's possible to create a program with JAVA that uses an algorithm to summarize data inputed. I've never done something like this before, If this is not possible with Java is it possible with C++ or any other language??

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How To Take Input Text File With Terms And Create Glossary With Hyperlinks

Nov 28, 2014

I'm working on a project where I have to take an input text file with terms and create a glossary with hyperlinks. I've got it working halfway. It outputs the html files for some but not all of the terms and I can't figure out why.

I'm getting these errors:

Please enter the location of the input file: data/terms.txt
Please enter the location for the glossary: data/testOutput
Exception in thread "main" java.util.ConcurrentModificationException
at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:953)

[Code] .....

How would I fix them??

Code :

import java.util.Comparator;
import components.map.Map;
import components.map.Map2;
import components.queue.Queue;
import components.queue.Queue2;
import components.sequence.Sequence;

[Code] ....

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Working On A Program That Creates Array From A File

Feb 19, 2015

Working on a program that creates an array from a file, organizes it in various ways, and then prints the results. Right now I'm specifically having trouble with the printAry() method - when I try to run it, I receive a NullPointerException for the active line in printAry() (EDIT: line 102). Not sure which sections are important to this, so I will include the client class and most of the service. I realize that the amount of documentation I included is not necessary, but it is required for the class.

class Lab3StudentAryService
{
private int count;
private Lab3StudentData [] studentAry = new Lab3StudentData[50];

/*
@param: none
@return: none
reads file and converts to array.
*/
public void fillAry() //constructor
{
Scanner scan = new Scanner(System.in);

[code]....

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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] ....

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How To Get User Input And Create Variable

Sep 16, 2014

Okay, so I know how to get user input and create a variable from the input, create a basic addition sum etc...

So I have this code:

package calc;
import java.util.Scanner;
class calc{
private static final double add = 0;
private static final double subtract = 0;
public static void main(String args[]){

[Code] .....

I'm basically trying to make it so that when the user enters tnum, tnum2, tnum3 and tnum4, their answer turns to the variable which has to be either true or false to make the boolean work. I don't know really how to do this. I want to make it so that if they enter yes, then that makes the boolean true and the numbers will multiply and create the answer variable. If they enter no then the boolean is false and it moves onto the next if statement. How can I do this?

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Generate QR Code From Input Text And Display Information About Input / Output Bits

Nov 12, 2014

I am trying to write a program that will generate a QR Code from an input text and also display some information about the input/output bits. So far I have created the frame and what to do next. And I'm not sure if I am on the right track since my level of programming is not that great. By the way, I am using zxing libraries from GitHub. I know, there are plenty of generators online for the QR Code, but that is not what I am looking for. As you can see on the attached image, I am more interested in the efficiency of encoding 2D data. Also, I noticed that almost all the online projects regarding 2D codes are for Android. Which is not very useful.

// QR Code Generator
package qrcode;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;

[Code]....

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Sep 16, 2014

I am required to read user input to create two matrices which will eventually be added together. I am unsure as to how I can read the input from the user as an int and not a String. The input is from size 0-10 for both column and row size. Also, can you have a new button created in the actionPerformed method of a previous button?

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class Matrices implements ActionListener {
private JFrame win1, win2, win3, win4;

[Code]...

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Where To Input Segment To Get User Input Dialog

Apr 9, 2015

Where do I input this segment?

Scanner user_input = new Scanner( System.in );// This line goes at the top with the other global variables

public void getUserInput(){
System.out.print("Enter litres: ");
litres = user_input.nextDouble( );
System.out.print("Enter mileage: ");
mileage = user_input.nextDouble( );
System.out.print("Enter speed: ");
speed = user_input.nextDouble( );

[Code] ....

This is my client file.

class Client{
public static void main(String []args){
Bike R1=new Bike(5.0, 60.0,30.0);//create bike object with params
Bike R2=new Bike();//without params
System.out.println(R1.increaseSpeed());//calling methods
System.out.println(R1.maxDistance());
System.out.println(R2.increaseSpeed());
System.out.println(R2.maxDistance());
}
}

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Create A Method Called MirrorImage Which Takes Two Integer Arrays As Input Parameters

Jan 8, 2009

Create a method called mirrorImage, which takes two integer arrays as input parameters. You may assume that the two actual parameters have the same length. Your method should return true if the arrays are the reverse of each other. Otherwise mirrorImage should return false.

Examples:

data1:{1,2,3}
data2:{3,2,1}
==> true

[code].....

I'm pointing a place outside of the array or something

runtime error (line 8, column 0): java.lang.ArrayIndexOutOfBoundsException: 10

-> array.ArrayQuestions.mirrorImage()

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Cannot End Input Of Data On Program

Apr 25, 2014

Write a program that allows the user to enter students names followed by their test scores and outputs the following information(assume that the maximum nmber of students in the class is 50; if the number of students is less than 50, to indicate the end of input data, after entering the last students data, on a line by itself, hold the ctrl key/press z and then press the Enter key):

a) Class average

b) Names of all the students whose test scores are below the class average, with an appropriate message( youre below class average)

c) Highest test score and the names of all the students having the highest score.

Use methods.

Now I wrote the program but i cant figure out how to end the input by pressing ctrl key/press z and then press the Enter key...

Here is my code

import java.util.Scanner;
 public class ClassAverage {
public static void main(String args[]) {
String names[] = new String[50];

[code]....

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Exit Program When Nothing Is Input

Apr 16, 2014

If a user inputs nothing the code should end ... How Should i do it?

import java.util.Scanner;
public class MyQueue<T> implements Queue<T> {
private T[] ringbuffer;
static int capacity = 0;
int mysize = 0;

[Code] ....

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Program Won't Go To Result After Input

Feb 19, 2014

I have to create a program that takes a list of student names and grades and then takes the 2 highest scores and reads them, but the result won't show. I'm pretty sure it's because I'm not sure about how to code the last part which should output the results. Here's my code.

import java.util.Scanner;
//Reads input and outputs 2 highest scores
//for loop. nested for.
public class HighestScores {
public static void main(String[] args) {
//create values
String studentName;

[Code] .....

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Nov 7, 2014

This is a college course assignment that consists of classes TotalSales and TotalSalesTest.In the main program I have created a two dimensional array to output a columnar layout with cross-totals in 4 rows and 5 columns. This program outputs sales totals by row for each sales person(1 - 4) and output by column for products(1 - 5). I have created extra elements in the array to store total for rows and columns. So far both classes compiles. The problem is that although the PrintWriter creates a notepad file, it doesn't print to it. I don't seem to understand the input and output methods completely. I finished another program similar to this using basically the same try and catch that read the file and printed out a document in notepad. Here is the code and I'll try include the input file.

import java.util.Scanner;
import java.io.*;
public class TotalSales {
private int salesPerson; //declare class variable
private int productNumber;//declare class variable

[code]....

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Read File And Input Each Line Of File Into Array

Mar 21, 2015

I am trying to read a file and input each line of the file into an array. I have not set the array size as I was hoping to fill the array using a while loop. Unfortunately the scope of the array does to work inside the while loop so I am being told that the array 'students' has not been initialised even though it has just outside of the while loop. Is it possible to do what I am trying to without having the array initialised in the while loop as surely the array will be reset every time if it was in the while loop? Here is my code:

public static void students(String file) throws FileNotFoundException {
try {
File studentInfo = new File(file);
Scanner input = new Scanner(studentInfo);
String[] students;

[Code] ....

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GUI Program - Convert Input Name To Number

Mar 12, 2015

A GUI program that allows user to enter their name and the program will convert it in number using array.

For example if i input "EUNISE" the output should be 521149195

Because the letter equivalent of

a = 1
b = 2
c = 3
d = 4
e = 5
f = 6
g = 7
h = 8
i = 9
j = 10
k = 11
l = 12
m = 13
n= 14
o = 15
p = 16
q = 17
r= 18
s = 19
t = 20
u = 21
v = 22
w = 23
x = 24
y = 25
z = 26

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Program Will Only Accept Input From 1 String?

Jan 14, 2015

I am trying to create a fortune teller and everything is running fine except the program does not prompt you to answer the questions

Do you like donuts?
and
What did you have for breakfast?

Here is the code this is in Bluej :

import java.util.Scanner;
public class FortuneTeller {
public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);
System.out.println("Welcome to Fortune Teller");

[Code] .....

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How To Input Exit Code Into Program

Mar 12, 2014

I just want to know how I can get my program to end when the user inputs "0." By using: System.exit(0);

import java.util.Scanner;  
public class TestCode
{
public static void main (String [ ]args ) {
Scanner console =new Scanner(System.in);
System.out.println("To exit program input 0");
for (int y = 1; y < 11; y++ ){ // Executes output 10 times
 
[code]....

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Program Skipping Over User Input

May 19, 2014

So i'm just toying around with making a simple inventory system, and when i'm trying to get the user's input (first the ID number, then the item name, then the item price) it will take the ID number, output asking for the name (but not take any input for it) and then ask for the item's price. I'm really not sure why it's never happened to me before when getting user input.

This is the input part of my code:

public void getInfoAdd() {
int id;
String name;
double price;
System.out.print("Enter ID: ");
id = sc.nextInt();
System.out.print("Enter item name:");
name = sc.nextLine();
System.out.print("Enter desired price: ");
price = sc.nextInt();
addItem(id, name, price);
}

And this is what it outputs:

Quote
Enter ID: 2
Enter item name:Enter desired price: 40
Successfully added: 2 $40.0

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Oct 23, 2014

Writing a program to take input from user. This input must be done with numbers only. If the input is a string I would like the program to loop and ask for input again.

double depositCheckingAmount;
do
{
System.out.println("Please insert amount to deposit into checking.");

[Code]....

As you can see my attempt is to use the ! expresssion incase the input does not equal a double. Is there another method I should be using?

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Nov 2, 2014

I am writing a program where whatever number I input in my scanner, it will space them...

For example: If I input 456, the output should be 4 5 6... here is my code:

import java.util.Scanner;
public class midterm {
public static void main(String[] args) {
Scanner kb = new Scanner(System.in);
String number = "";

[Code] ....

the current output for this program is:
456 456 456

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May 10, 2014

public class Car
{
//instance variables ----------------------
private String make;
private String model;
private int year;
private double vehiclePrice;
private double downPayment;
private double milesPerGallon;

[code]....

I created this class "Car" (also not sure if it's correct) and need to write a driver program that creates two instances of the class Car. One must use the default constructor, and the other must use the non-default constructor. It must demonstrate the methods used in the Car class using those instances.

public class DriverCar
{
public static void main(String[] args) {
Car car1 = new Car("Toyota", "Corolla", 2013, 20000, 3000, 35);
Car car2 = new Car("Ford", "Taurus", 2005, 14000, 1500, 25);
System.out.println(car1);

[Code] ....

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Feb 3, 2014

I am stumped on a coding project I am working on. I am making an inventory program with predefined values for the items. I am not sure how to iterate through my arrayList, and allow the user to input the "number sold."

I have made an arrayList and populated it using the add(), but I am not sure if it is working correctly. This is my inventoryItem class :

package inventory;
import java.text.DecimalFormat;
public class inventoryItm {
String itemName;
double unitPrice;
int numberSold;

[Code] .....

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