Display Two Numbers / Integer Code And Computed Result To Screen
Oct 26, 2014
Write a program that will read two numbers and an integer code from the keyboard. The value of the integer code should 1, 2, 3, 4. If the value of the code is 1, compute the sum of the two numbers. If the code is 2, compute the difference (first number minus second). If the code is 3, compute the product of the two numbers. If the code is 4, and the second number is zero, compute the quotient (first divided by second). If the code is not equal to 1,2,3,4, display an error message. The program is then to display two numbers, the integer code and the computed result to the screen
here is the code that I have so far:
public static void main(String[] args) {
Scanner read = new Scanner (System.in);
int num1, num2, code, sum;
System.out.println("Please enter a number");
num1 = read.nextInt();
[Code] .....
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Jul 24, 2014
I'm currently working on a program that is supposed to translate morse code and then display the result and I'm stuck, my program has tons of errors when I try to compile.
public class Assignment10
{
public static void main ( String [] args )
{
String str = Input.getString("Please type in a word");
char [] letters = {'a','b','c','d','e','f','g',
[Code] .....
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Aug 22, 2014
I am having problems with writing a simple program to see if a number is divisible by 6.
public void run() {
println("This program will display all numbers divisible by");
println(" 6 between 1 and 100.");
int x =1;
boolean divide =(x%6==0);
[Code] ....
It is telling that every number is not divisable by 6?
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May 8, 2015
I am trying to code using error handling and I am a bit confused on how to go about doing it correctly. My code converts a string that has all numbers into an integer and the error handling should recognize that if it isn't a proper number and ask the user to try again or enter 'q' to quit.Do I place a throw new exception in the try block and put conditionals like if charAt(i) is some letter or a symbol then throw new exception?
Java Code:
import java.util.Scanner;
public class practice {
public static void main(String[] args) {
Integer finalValue = null;
boolean validValue = false;
Scanner scan = new Scanner(System.in);
int result = 0;
[code]....
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Jan 11, 2015
My program is attempting to:
1. ask user to input a decimal
2. output 1 - confirms the input
3. output 2 rounds the input value to the nearest integer.
Here is what I have so far:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
import java.util.Scanner;
public class IT145Exercise13 {
static Scanner console = new Scanner(System.in);
[Code] .....
Results with input of 5.25:
run:
Enter a decimal:
5.25
You entered 5.25
The integer value is 5 YES however,
BUILD SUCCESSFUL (total time: 6 second)
However, if the input is 5.95 here are the run results:
run:
Enter a decimal:
5.95
You entered 5.95
The integer value is 5 Here I expect 6
BUILD SUCCESSFUL (total time: 6 second
Not sure how to ask the output of the variable integerOut to be rounded to the nearest integer?
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Apr 21, 2014
I have html code that use form and the result displayed with display tag library the form forward to servlet page but when I use a javascript to change value of hidden after returning to html page the value of hidden input deos not change
<form name="form" method="get" action="Text" >
<input type="checkbox" dir="rtl" ID="CheckBox2" value="check" onclick="All(this,'all','_chk');">
</td>
<td> <input type="submit" name="delete" value="حذف"></td>
</tr><p>
<div align="center">
[code]....
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Dec 3, 2014
I have to do feet to meters code. here is the question. Write a Java program that reads a number in feet, converts the number to meters and displays the result. One foot is 0.305 meters.
here is my code :
import java.io.*;
class FeetToMeters
{
public static void main (String[] args) throws IOException
{
InputStreamReader inStream = new InputStreamReader (System.in);
BufferedReader stdin = new BufferedReader (inStream);
[Code] ....
I have seen alot of people use the scanner tool for the start of it but we never learned it as it is an online course but we may end up learning it farther on in our java programming. we have just started with the input and output stuff.
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Apr 26, 2015
I am trying display the result set from the database.I am getting the following exception :
Caused by: javax.servlet.jsp.JspTagException: Don't know how to iterate over supplied "items" in <forEach>
at org.apache.taglibs.standard.tag.common.core.ForEachSupport.toForEachIterator(ForEachSupport.java:286)
My Jsp code :
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
[Code] ....
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Jan 20, 2014
I just started taking a Java class and i'm having problems with this code,
I'm trying to add up the 4 numbers have them print out on screen.
public class finalGrade
{
public static void main(String[] arg)
{
double pLp = 28.3; //Participation, lab work, and programming
[Code] .....
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Mar 29, 2014
I have a problem with my code,in fact I can't output the stream from console to my jTextarea,this is my code:
public class AudioFrame extends javax.swing.JFrame {
static double[] audioFile;
static String audioToDecode;
static String audioKey;
static String outputName;
static String outAudio;
static String name;
static int command;
static String textToEncode;
[Code]...
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Jun 12, 2014
I want to write a method which would give us a rectangle with numbers. The input is an integer which represents the length of a line in rectangle and the result type is void. The example for n=4 is:
3210
0321
1032
2103
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Mar 14, 2014
When I am invoking a servlet class file from my HTML file instead of displaying output in my browser it is downloading my output as a file..Why it is?..
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Apr 12, 2015
I got this code with mode methods. The results is not exactly what I want.
Code:
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import java.util.*;
public class ProcessMarks {
private static final int NMARKS = 125;
[Code] ...
Result (it's repeat number):
*Mode is = 53
*Mode is = 53
*Mode is = 53
*Mode is = 53
*Mode is = 53
*Mode is = 62
*Mode is = 62
*Mode is = 62
*Mode is = 62
*Mode is = 62
*Mode is = 67
*Mode is = 67
*Mode is = 67
*Mode is = 67
*Mode is = 67
*Mode is = 77
*Mode is = 77
*Mode is = 77
*Mode is = 77
*Mode is = 77
*Mode is = 78
*Mode is = 78
*Mode is = 78
*Mode is = 78
*Mode is = 78
*Mode is = 85
*Mode is = 85
*Mode is = 85
*Mode is = 85
*Mode is = 85
Result that i want it to be (number appear only once):
*Mode = 53, 62, 67, 77, 78, 85
or
*Mode is = 53
*Mode is = 62
*Mode is = 67
*Mode is = 77
*Mode is = 78
*Mode is = 85
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Apr 24, 2014
I've just written a program that generates 100 numbers that range from 0 ~ 25 using arrays, the program calls another method that sorts the even numbers into a separate array and returns the array. I need it to display both arrays, however, when I run my program, the numbers of both arrays are mixed together, and I'm not sure how to separate them.
[ public class Array1
{
public static void main(String[] args)
{
int array [ ] = new int[100];
for (int i = 0; i < array.length; i++)
{
array[i] = (int) (Math.random() * 26);
[Code] .....
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Aug 29, 2014
The code here I have works fine if I just want to ask the user to enter four digits: //java application that asks user to input binary numbers(1 or 0) and convert them to decimal numbers import java.util.Scanner; //program uses class scanner public class binarynumber{
//main method that executes the java application
public static void main(String args[]){
//declares variables
int digit;
int base=2;
int degree;
double decimal;
int binary_zero=0;
int binary_one=1;
//create scanner for object input
[code]....
The thing is, I want the java application to input more than four digits for the user and I want it to loop it manytimes f until the user ask it to stop.
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Feb 19, 2014
I am developing an dashboard application in Java, JSTL, MySql, Apache Tomcat 6.I have the below files
1. Dashboard.java (model)
2. DashboardDAO.java (dao)
3. DashboardController.java (Controller)
//Source
protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
String forward = "";
forward = LIST_DASHBOARD;
HttpSession session = req.getSession(true);
[code]....
It works in the first time. But, after sometime the data is not retrieved and display empty screen. Once, i stop and start the server again, the data is getting retrieved again. But, later when we refresh the empty page is getting displayed again.
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Jul 30, 2014
I am writing a piece of software to display an image on the screen using a particular library. The library lets me create an Atlas out of texture file data, to fetch Textures out of the Atlas using the textures' names, and to draw the textures by calling Renderer.draw(texture). It doesn't make a great deal of sense to create more than one of an Atlas or Renderer. I previously designed my code as follows:
public class SystemAssets {
static Atlas atlas;
public static void initializeAtlas(String pathToTextureFiles) {
atlas = new Atlas(pathToTextureFiles);
}
public static Texture getTexture(String textureName) {
return atlas.getTexture(textureName);
}
}
Similarly, I made a TextureRenderer class whose sole purpose is to provide static access to a Renderer. But many people seem to say that opening up a class like this to global access is bad. I cannot think of any better alternative, however. My core update/draw logic currently works something like this:
public class Game extends AbstractGame {
public void init() {
Screen current = new FirstScreen();
TextureRenderer.initialize();
[code]...
Making a Renderer object belong to the Game or Screen class doesn't make much sense to me, as there doesn't seem to really be a 'has-a' relationship between them; it's more of a 'uses-a', so that seems to imply that it would be best to just call Renderer.draw(thing) from outside the class rather than making it a data member. This would make my main code essentially call the various methods in order to get or print some form of data, much like System.out.println(). And of course, making one of the classes a subclass of Renderer makes even less sense. But making data members static for the purpose of global access and using singletons are often cited as 'bad' programming practices. This problem also arises in a lot of other scenarios in my program, ie. when I want to serialize Thing data members like texture filenames; do I put the serializer as a static data member in a class for global access and call it like I would a function, or do I put it in a class? And it seems like the Renderer will have to be initialized at the start of the program, which would take place in the init() method in Game, then be used to draw Textures in the Screen, so it would have to be accessible from both locations.
edit: In case it's suggested to put these in the main class, that's unfortunately going to be difficult without using static variables; the library recommends having the main class creating an Application object, which is essentially a black box that actually does all the work of calling Game's init() and draw() methods (via a Game object passed into its constructor) and looping until the program exits. AbstractGame and Screen are classes supplied by the library, so it doesn't seem like I can easily give Game any data that AbstractGame doesn't specifically ask for.
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Feb 14, 2014
How to solve the following task:
Design a programto display the followingSchool Time Table on screen.
Capture.PNG
Yourprogram should use thefollowing named constants tocontrol theformat of the calendar display:
/*Thenumberofdaysinthemonth*/
privatestaticfinalintDAYS_IN_MONTH=31;
/*Thedayoftheweekonwhichthemonthstarts*/
/*(Monday=0,Tuesday=1,andsoon)*/
privatestaticfinalintDAY_WEEK_STARTS=0;
/*Thewidthinpixelsofadayonthecalendar*/
privatestaticfinalintDAY_WIDTH=40;
/*Theheightinpixelsofadayonthecalendar*/
privatestaticfinalintDAY_HEIGHT=30;
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Sep 12, 2014
I need to create a simply application that would display the results of two dice thrown five times and the total of those results. This is shown below in the attached file.
The problem is, I have a do-while loop that loops 6 times. Inside the loop, I have 2 random.nextInt(5) that generate random numbers. But how can I output the total? How can I make a variable equal to the sum of the two random numbers if the two random numbers are located inside a do-while loop?
Attached below is also the code I have thus far.
(Attached below is both files: what it needs to look like, and what it currently looks like)
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Oct 23, 2014
My mad lib program was able to store my three notepad text: noun, verb, and story. I would like to find out what is the best way to make it display my result randomize my story from notepad? once everything is stored?
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import java.util.*;
public class StoryProject extends JFrame implements ActionListener
[Code] .....
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Nov 24, 2014
for (int i = 0; i < letters.length; i++) {
double relativeFreq = (onesAverage()/letters[i]);
char a = characters.charAt(i);
double j = score[i];
System.out.printf();//ToDo
Above is my current code. Basically- There is a string called characters of length 26 (1 char for each letter in alphabet), a double relativeFrequency value which does a calculation and the end result is a number with lots of decimal numbers. The score array has set double values within the array.
What I want to do is create a print f statement where I print out each of the values I initialized above WITH specific amounts of spaces in between. So it should be in this order:
a (spaces) j (spaces) relativeFreq (newLine).
Between J and relativeFreq there should be 4 spaces, however if the value in relativeFreq is greater than 10 (it won't be greater than 100)- then there should be 3 spaces. Everytime I try to create a printf statement my code ends up crooked for some of the values.
for (int i = 0; i < letters.length; i++) {
double relativeFreq = (onesAverage()/letters[i]);
char a = characters.charAt(i);
double j = score[i];
System.out.printf("%c %.4s %.4s%n",a, j, relativeFreq);
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Aug 11, 2014
I need making the toString() method return a String rather than display a message to the screen. Also, I'm not supposed to call the toString method in my demo class to test it, so what should I do instead?
public class cupDispenser {
String location;
int noOfCups;
cupDispenser(String location,int cups)
{
this.location=location;
this.noOfCups=cups;
}
public String getlocation()
[Code]...
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Feb 17, 2014
Basically the code is for a game which is displayed in a window. The statement if(false) //full screen mode is confusing me a little. How does this if work? it doesn't seem to be testing for anything so how does it ever get set to full screen mode? Is the if even needed? why not just code windowed mode?
public class Window extends JFrame{
private Window()
{
// Sets the title for this frame.
this.setTitle("My test");
// Sets size of the frame.
if(false) // Full screen mode
[Code] .....
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Oct 4, 2014
Write a program that will calculate the cost of a ticket order and display the receipt for the customer on the screen. There are 2 ticket prices: adult, and senior citizen. Adult seats are $4.50 and senior citizen seats are $3.50. If more than 5 senior citizen tickets are purchased, the customer gets an extra 20% off the of the ticket order. If more than 10 regular seats are purchased, the customer gets an additional 10% off the cost of the order. A customer can only place an order for one type of ticket. Output the type of ticket purchased, the number of tickets purchased, the gross cost, the amount of the discount, and the final cost of the order.
I am having errors with incaompatible varriables comparing float with doubles.
public class lab3 {
static Library myLib;
public static void main (String [] args) {
Library myLib = new Library(); //Instance the Library class
int ticketNum; //Number of Tickets
[Code] .....
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Dec 27, 2014
1)A factorial of a number X is equal to X*(X-1)*(X-2)*...*1.For example,3! is equal 3*2*1=6.Create a class called Factorial Algorithm which will compute and print the factorial of an integer number on the screen
2)Write a Java program to accept eight integers and a search element from the user and display whether the element is found or not.(Hint:use bubble sorting and binary search)
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May 7, 2014
My program gives me an error when I try to "digUp" the purse. The error appears in the purse class.
import java.io.*;
public class Purse
{
//Fields
public double gp;
public double gold;
public double silver;
public double copper;
public double platinum;
public static final double GOLD_VALUE = 1;
[Code] ....
In the digUpPurse() method, it tells me
java.lang.NullPointerException
null
What this means.
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