Writing A Program That Determines If Number Is Palindrome Or Not
Apr 3, 2015
I'm in the process of writing a program that determines if a number is a Palindrome or not. I'm not allowed to use strings and am required to use the getSize method shown below. I believe my issue that I'm having is that the "num" is not being called in the getSize method, and therefore not running the while loop, or at least that is what I believe is the issue.
import javax.swing.*;
public class getSize{
public static void main( String[] args )
{
int num;
num = Integer.parseInt (JOptionPane.showInputDialog ( "Please input a number" ));
I want to find the prime palindrome numbers less that a given number by my program. Here is my code, I am trying to find the method to solve the errors when I compile it. It said variable a might not have been initialized in line 41,62,86.
import java.util.Scanner; public class Lab5{ public static void main (String[] args){ System.out.println("Please input a number"); Scanner Input=new Scanner(System.in); int num = Input.nextInt();
a. Write a code that is written inside a body of a method named average that takes two parameters: N that determines number of terms you should calculate the average of and lowBound that is the beginning term of the geometric sequence. if lowBound is 4 and N is 3, then the average of 4, 8, 16 is calculated and returned.
My code runs fine if I set the test as 16, but I can't figure out what I could do to N to have it determine the number of terms. This is what I have so far...
public class AvgIt { public static void main (String[]args) { double result = average(4, 3); System.out.println("Average is " + result);
I have to write a program that inputs a 5 digit integer from the keyboard and prints if the input number is a palindrome or not. I got it to work, but when my result prints it says "0 is a palindrome" or "0 is not a palindrome". How can I get rid of the 0 and replace it with the number input by the user?
import java.util.Scanner; public class Palindrome { public static void main(String[] args) { int number; int digit; int temp;
I am trying to figure out stacks and queues and was trying to get this Palindrome program working so I could then play with it and use the Java visualizer site but for some reason the program isn't working correctly. It always states that the input is a palindrome no matter what the user input is.
The book that I got the code from is a little old so I changed a couple small things that I thought needed updating like adding scanner. I wanna use one with a custom array based stack and queue class rather than the java.util.Stack and Queue interface, just for understanding stacks and queues better hopefully.
import java.util.Scanner; import javax.imageio.IIOException; public class PalTest { public static void main(String[]args) throws IIOException { Scanner scan = new Scanner(System.in); PalindromeTesting x = new PalindromeTesting();
I am trying to create a program that reads a sentence, such as: "abba is running to the radar" scans this sentence, and then prints out all the palindromes. I am running into issues with my arrays and for statements. Here is my code:
static String palindrome, backwardsLower, palindromeLower, palindromeClean, backwards2, backwards = ""; static String[] words; static int counter; public static void main(String[] args) { palindrome = JOptionPane.showInputDialog("Please enter a phrase. " +
[Code] ...
I am aware that there is a few "useless" variables in there at the moment, I will clean them up (as well as some useless statements, I see those too). The issue comes at about line 17. The variable backwards REMOVES all the spaces from the array, so when it comes time to compare the strings, it is comparing individual words to the ENTIRE string, thus no words will ever be a palindrome.
Using Eclipse I have imported a WAR with source. I have exported that project as a new war and it ran fine. I then added my own package and exported the war again. The jar file does not show up in /WEB-INF/lib folder. When I deploy the war on a tomcat server it barfs the following error:
Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.sharpline.fields.form.fields.TextAreaFormType] for bean with name 'com.sharpline.fields.form.fields.TextAreaFormType#53c37' defined in ServletContext resource [WEB-INF/activiti-standalone-context.xml]; nested exception is java.lang.ClassNotFoundException:
[Code] .....
It looks to me like my class (jar) is missing in the final war. How do I resolve this?
I am writing a program in Java where a user adds 1 stamp on a letter for every five sheets of paper in it (or fraction thereof)For example, I if I have 11 sheets of paper, I add 3 stamps. If the total number of stamps is more than 3, they don't send it.
I need to ask the user how many sheets of paper they have, and then calculate the appropriate number of stamps based on the formula above. I just don't know how to write the math formula to calculate this, i'm stuck. So far I have:
package test; import java.util.Scanner; public class LetterMailing { public static void main(String[] args) { Scanner stdIn = new Scanner(System.in); int numSheets;
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?
So i was assigned to write a program that would print the answer to the system of two linear equation. the form of ax+by=c and dx+ey=f..I wrote this program, but it is incorrect since I tried it out on my terminal and I keep getting incorrect values.
import java.util.Scanner; public class Quest4 { public static void main(String[] args) { Scanner input = new Scanner(System.in);
I'm writing a program to dynamically update an xml file to add, delete, and edit entries in the file. I've run into an issue with the add method because when I write into the file, a random letter is added before the line. EX:
I want to add "<item> ..." to the end of the list of entries, but when it is added, this is what is added "Z <item> ..."The spacing for the <item> is correct, however, I don't see where or why the Z is added.
public static void insertItem(Item i) { try { String insert = " <item>"; String text = ""; Scanner in = new Scanner(file);
Im trying to write a java program to search nearby bluetooth devices.. Im using Bluecove-glp-2.1.0 and bluecove 2.1.0..Im working on Ubuntu 13.04 LTS.I typend a code to get the local Device name..
public class BluetoothSearch { public static void main(String[] args) { LocalDevice ld= null ; String name = ld.getBluetoothAddress(); System.out.print(name); } }
this is my code.. It returns me null. doesn't return me the local Device.
It was quite recently that Data Structures was introduced to me, so I started out writing some iterative programs recursively.I found some strange output which shouldn't have come out but if you take a look at these three codes
long factorial(long n) { if(n == 1) { return 1; } else { result = n*factorial(n-1);
[Code] ....
These are three versions of the code, achieving the same objective of obtaining a given number and returning the factorial, but in spite of the changes made to the code, they produce the same result. I needed a reason as to why it is so? I tried to dry run all the codes but at some point or the other I got confused, and had to start all over again and couldn't come up with a proper result.
User-defined classes. The concept of getters and setters goes right over my head. Right now we're to write a program to test the Person class below. We have to create 2 instances of the class to test each constructor, and test each method.
class Person { // Data Members private String name; // The name of this person private int age; // The age of this person private char gender; // The gender of this person // Default constructor public Person() { this("Not Given", 0, 'U');
[code]....
then my output will print out the name. But the assignment doesn't tell us to modify the Person class at all, just to create a tester one.
I need to convert a .txt file to html text, where the first line is changed to have < h1 > < /h1 > around it and the rest is wrapped in < p > < /p > so for example I read a .txt file that says:
chapter 1
this is a sentence
it would output:
<h1>chapter 1</h1>
<p>this is a sentence</p>
here is what I have so far and I cannot get anything to output.
The manager of a football stadium wants you to write a program that calculates the total ticket sales after each game. There are four types of tickets: box, sideline, premium, and general admission. After each game, the data is stored in a file in the following format:
ticketPrice numberOfTicketsSold
Sample data might look like:
250 5750
100 28000
50 35750
25 18750
The first line indicates that the box ticket price is $250 and that 5750 tickets were sold at that price.
Your program should input in this data (using Scanner or an input dialog box), then output that data to a message dialog box along with total ticket sales information. Output the total number of tickets sold and the total sale amount. Make your output user-friendly and "pretty". Format your output with two decimal places. Use JOptionPane and the formatting techniques learned in chapter 3 for your output. Example output might be:
5750 Box Tickets sold at $250.00 28000 Sideline Tickets sold at $100.00 35750 Premium Tickets sold at $50.00 18750 General Admission tickets sold at $25.00
public class Search { public static final int NOT_FOUND = -1; public static int binarySearch( int [ ] a, int x ) { int low = 0; int high = a.length - 1; int mid; while ( low <= high )
[Code] ....
I keep getting illegal start of expression at ={-3,10,5,24,45.3,10.5}
It says I have 12 errors and I have tried so many things to fix it and I just don't know what to change to make it work.
I'm (failing at) writing a program that searches an array using binary search, but I can't get it to work.
My code so far is this:
Java Code:
package sorting;
import java.lang.*; import java.util.*; public class sorteh { public static void main(String [] args){ int[] array=new int [20]; //creates new array for (int x=0;x<array.length;x++){ //populates array array[x]=x*3+1;
[code]...
I copied what a website did for the sorting part, but if I have low=0 and high=19, wouldn't mid not be an int?
Quote : A bank in your town updates its customers' account at the end of each month. The bank offers two types of accounts: savings and checking. Every customer must maintain a minimum balance. If a customer's balance falls below the minimum, there is a service charge of $10 for savings accounts and $25 for checking accounts. If the balance at the end of the month is at least the minimum balance, the account receives interest as follows:
- Savings accounts receive 4% interest.
- Checking accounts with balances of up to $5000 more than the minimum balance receive 3% interest; otherwise, the interest is 5%.
Write a program that reads a customer's account number (integer), account type (character: s for savings or c for checking), minimum balance that the account should maintain, and the current balance. The program should then output the account number, account type, current balance, and an appropriate message.
Your program should only allow 'c', 'C', 's', or 'S' as valid input, any other character for the account type should result in an error message. Format your monetary output to two decimal places, and use constants for all the above constant values.
Sample output: Please enter your account number (int), account type (char), minimum balance, and current balance: 46728 S 1000 2700 Account Number: 46728 Account Type: S You have earned 0.04 interest on your account. Current Balance: $2808.00
I am new to programming and we are writing a program to make a tic tac toe game utilizing inheritance, client-supplier, arrays, and EventButton. I am still trying to wrap my head around events and inheritance. We are instructed to write 4 classes (a TicTacToeModel, a TicTacToeView, a TicTacToe Controller, and a TicTacToeButton). I got the TicTacToeModel down, but am having trouble with the other classes.
Instructions for View: Write a class that implements the UML class diagram below. The only purpose of this class is to draw a picture of the specified TicTacToeModel. For purposes of this assignment, we understand a ‘theme’ to include such things as the background color of the tic‐tac‐toe board, the shape and color of the X indicator and the shape and color of the O indicator. While you are free to select your own personalized ‘theme’ your TicTacToeComponent must always be proportionally ‘correct’ regardless of the client‐determined width and height of the Component.
Instructions for the Controller: Write a controller that controls the game. There is one human player (the X player) and the computer player (the O player). The name of the class must be TicTacToeController. In a sense, the controller is the game since the controller will
1) create a TicTacToeModel 2) create a TicTacToeView and 3) create a TicTacToeButton (you must write this class following the design pattern covered in class lectures), a label, and text field such that when the button is pushed, the player moves into the cell selected by the text field. After every player move, the computer moves into a randomly selected empty cell. When the game is over, a text message must be displayed somewhere on the screen the gives the status of the game. While you are free to change the appearance of the controller, the basic elements must be provided
These are our instructions for the TicTacToeButton: create a TicTacToeButton (you must write this class following the design pattern covered in class lectures), a label, and text field such that when the button is pushed, the player moves into the cell selected by the text field. After every player move, the computer moves into a randomly selected empty cell. When the game is over, a text message must be displayed somewhere on the screen the gives the status of the game.And this is the code I have thus far for the button:
import java.awt.event.*; import java.awt.*; public class TicTacToeButton extends EventButton{ public TicTacToeButton(int x, int y, int w, int h) { super("Move"); setBounds(x, y, w, h);
I'm trying to write a program that will output the total number of large,medium,and small pizza along with the average cost of an order. I'm stuck on this error , "Else without if" on line 48 else ...medium.
import java.util.Scanner; public class PizzaOrder { public static void main(String[] args) { Scanner input = new Scanner (System.in); double cost,total, average; String name,response,size,type; int count,l,m,s;
I have a beginning Java Program I have been working on that creates a number guessing program where the computer guesses a number that the user is thinking of within a certain range. I so far have the program below, but need getting rid of a few kinks/ adding features.
-First, I need to set it up so that the user will be prompted and give a range. It should run and produce something like this:
Welcome to this first-ever mind-guessing program!
Please pick a range (higher than 1 and no larger than 50): 32
You will choose a number between 1 and 32... and I will try to guess it.
With each of my guess, you will tell me whether I am too high (h or H), too low (l or L), match (m or M), or you want to quit (q or Q). My objective is to find the number using as few guesses as possible.
-Second, the game is supposed to give up and restart after failing the five, guesses, but for some reason, after it fails the fifth time, it prompts a fifth guess once again instead, then restarts after- I need to prevent this, so that it should look something like this:
My fourth guess is 17: h My guess is too high?
My fifth guess is 16: h *** I am unlucky this round. I give up.
Let's play!
My first guess is 10: etc..
import java.util.*; import java.lang.Math; public class numguessprac1 { // Declaring variables public static String input; public static int quit; public static int guess; public static int wins;
