Creating A Clock That Displays Different TIME In Different Capitals
Oct 16, 2014
As much as a clock and a calender have to do with date and time, a question arose.
I am creating a clock that displays different TIME in different captials.
Date timestamp = new Date();
timestamp.setTime(timestamp.getTime());
DateFormat time = new SimpleDateFormat("HH:mm:ss");
time.setTimeZone(TimeZone.getTimeZone("UTC"));
System.out.println(time.format(timestamp));
This code, returns the current time in UTC 00:00, the center of the time measuring system. And my program either ADDS an hour to the timestamp or deletes an hour, to make it earlier. My question is: Does Java account for Daylight Savings Time?
On that day, hours shift, and does java shift with them? Is there a changed need to make my code in order to not get the wrong results after the daylight savings time has hit?
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Apr 10, 2014
I am making a elevator simulator for my class. It needs to be "event time". I am having trouble understanding how I can make an "event time" simulator. Initially I was using a while loop to run a clock time simulation of x seconds for each event, until I ran into a concrete wall and had to call another method which took X seconds, while still needing to execute code.
An example of what I did is:
Spawn person -> person.goToElevator (Takes x seconds) - > person.waitForElevator (Until elevator arrives, x seconds). While this is happening, I needed to create another person and do the same thing, this will add another to the queue if the first person is still waiting. Etc etc, you get the point.
We have not learnt about multi threading, that is the next assignment.
Here is a quote from my lecturer:
"That's right, it requires multi-threading which we're not doing in this paper. Here's a solution that can work:
The person waiting for the lift and then doing lots of other things should do all that in a fraction of a second. So, you don't let the person really wait. Instead, you will set a timestamp in the future in the person object that "he's busy till that time". In all other steps in your simulation you will first check if a person is "busy" (i.e. has a timestamp in the future). If so, you can't use this object, otherwise, you can.
How does it create a bigger queue? Outputs I would have in my final simulation would be, averageQueueLength, numOfPeopleInBuilding etc.
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Nov 5, 2014
how can you add a feature where the user can input the time for the clock to countdown to?
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May 10, 2014
the analog clock dese not move put it work when i run the program and the the buttoms dose not work i do not why how i can use the menu alarm to change the alarm time this my code run it.
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.Timer;
[code]....
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Mar 8, 2014
I have this assignment to build an employee time clock. By using a menu you can enter an employee, enter punch in and out, and report.When I created the punch screen I wrote the in and out records to a file. Because there can be several employees punching in or out the file wrote each occurrence on different lines. Now I am attempting to write the report which you enter an employee Id and loop through the file to find the in and out date and then calculate the time (hours worked). I loaded the file into an Arraylist but now I cannot figure out how to loop through find the In and Out date - calculate the hours worked and then move on to the next day. here is the format of the file - employee id, place holder I or O, date, time, day. and sample
111221111i3/2/145:10 PMSunday
111221111o3/2/145:10 PMSunday
111331111i3/2/145:25 PMSunday
111331111o3/3/1412:47 PMMonday
111221111i3/3/1412:48 PMMonday
111221111o3/3/142:23 PMMonday
111441111i3/4/141:30 PMTuesday
[code]....
here is my code from the main screen.
public static void displayPunches()
throws FileNotFoundException, IOException, ParseException {
boolean isValid = false;
String choice = "y";
String emp = Validator.getLine(sc, "Enter I -Individual or A -All ");
if (emp.equalsIgnoreCase("A"))
[code]....
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May 3, 2014
I'm working on a Java/Android program that takes a number input (for example, hour = 7 and minutes = 30 for 7:30AM), and then expresses it on an Analog clock. (hour hand pointing to 7 and minute hand pointing to 30 minutes) ...
How can this be done? Would I need a lot of image files? How to start ...
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May 13, 2014
I have an application which is doing a fine job of placing the total hours on the interface.
Where I am breaking down is that I am unable to split the string into two distinct groups: hours and minutes
private HtmlElement createTravelTimeRow(ShowSet showSet) {
HtmlElement tr = new HtmlElement(ROW_OPEN, ROW_CLOSE);
HtmlElement td = new HtmlElement(CELL_OPEN, CELL_CLOSE);
[Code].....
I came across something which showed how to split the String but I am still very unsure how to do this.
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Dec 19, 2014
I have objects (baddies in a game) that have individual clocks/counters assigned to them (when I make an object, I fill an integer based array list with a new digit entry at a value of one) that all happens in threads. then in another thread, I am checking the whole list of clocks, to see if any are equal to a wanted value , then I am taking an action and reseting the clock at that point on the array list.
now, the problem is:even though my code says " yes, I've taken that action because the value of array position x was >= specified value and I will now reset the clock" it doesn't reset the clock. Here is what it looks like
*these are excerpts taken from a really big program, however they should stand on their own as they are individual classes
Java Code:
public class levelclock extends Thread {
public void run() {
while (Run2 == true) {
if (Run == false) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
[code]....
(Attached, just open up the zip and read the .txt)
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Jun 10, 2015
How do I impliment a clock/timer in Java? The program saves files in memory for future use. I've included part of the program below I'd like to add a timer to check if the file was changed every 10 minutes. I have included part of the program below.
static FastDateFormat fastDateFormat = FastDateFormat.getInstance("MM/dd/yy HH:mm:ss");
private static final class FileContentsObject {
private long cachedTime; // currentTime
private long lastModifiedTimestamp;
private List<String> contents;
[Code] .....
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Oct 6, 2014
I made an Analog Clock and its working but when a remove the filloval (Background) the seconds hand keep repeating itself..here is the code
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import javax.swing.JFrame;
import javax.swing.JPanel;
[code]....
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Jun 20, 2014
why this code only displays four zeros ?????
public class VargjetUshtrimi2 {
public static void main (String a []) {
int r[] = new int[11];
for (int i = 1 ;i < 10; i++)
{System.out.println( r[i] );}
}
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Feb 9, 2015
I am working on an assignment that I can't seem to figure out the final part to. The program takes in course data such as the time the class starts and how long it lasts. The time is in military time (0000 - 2400)
I need the output time to be the time the class started, plus the length of the class, and displayed in military time.
for example,
Start Time = 0930
Length = 50 minutes
Endtime = 1020
I can't for the life of me figure out how to do this. I have gotten a program that works for this time and minutes, and displays the correct 1020. But when I change the information to say
Start time: 0700
Length = 90 minutes
I get:
Endtime = 90
90 is technically correct, the way the formula is setup, but I need it to display 0900 not 90.
Here is the code that I have. Be easy, I'm still learning, and this is just the file I created to get the formula to work. Also, the verbose in here is just for my own debugging to make sure values should be what I'm expecting them to be.
public class calc
{
public static void main(String[] args) {
double hours, minutes, length;
double temp;
int time = 2400;
hours = time / 100;
System.out.println("Hours are: " + hours);
[Code] ....
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Dec 31, 2014
I am trying to write a java application that displays composite numbers between 1 and 100. Here is the format of my code:
//a java application that prints out composite numbers that range from 1 to 100
public class printcomposites{
public static void main(String[] args){
int num=0;
int i=0;
String printcomposites="";
for(i=1; i<100; i++)
[code]...
My code compiles with no errors, but my code generates every integer between 1 and 100 instead of integers that are composite:
Composite numbers from 1 to 100 are:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 5
7 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83
84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
What am I doing incorrectly?
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Mar 3, 2015
one of the java swing challenge I am facing. Problem statement: there are two JPanels panel 1 and panel 2 placed on a JFrame one below the other as panel 2 below panel 1. Now, I need to put a JButton in any one of the panels such that this JButton displays half in panel 1 and half in panel 2.
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Feb 28, 2015
I have to write a program that displays the first 100 pentagonal numbers using different methods. This is what I have so far:
Java Code:
public class FivePointOne{
public static void main(String[]args){
System.out.println("The the pentagonal numbers are: ");
}
//this method will find the penagonal numbers
public static int getPentagonalNumber(int n){
[Code] ....
But when I compile it to test it out I receive the error message "Illegal start of expression," ';' expected, and "reach end of file while parsing".
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May 9, 2014
I'm having trouble with this program. In my textbook it says "Write an application that displays a frame containing two panels. Each panel should contain two images (use four unique images - your choice). Fix the size of the first panel so that both of its images remain side by side. Allow the other panel to change size as needed. Experiment with the size of the window to see the images change orientation. Make sure you understand why the application behaves as it does". I successfully imported the images, but I can't find out anywhere how to allow the second panel to change size with the window.
import java.awt.*;
import javax.swing.*;
public class TwoPanels
{
public static void main(String[] args)
{
JFrame frame = new JFrame ("Embedded Images");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ImageIcon iconOne = new ImageIcon ("glove.jpg");
ImageIcon iconTwo = new ImageIcon ("cleats.jpg");
ImageIcon iconThr = new ImageIcon ("bat.jpg");
ImageIcon iconFou = new ImageIcon ("baseball.jpg");
[code]...
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Jun 1, 2014
The exercise sounds like this : Write a program that prompts the user to enter an integer from 1 to 15 and displays a pyramid , as shown in the following sample run (my code displays correctly the first 9 lines):
1
2 1 2
3 2 1 2 3
4 3 2 1 2 3 4
5 4 3 2 1 2 3 4 5
6 5 4 3 2 1 2 3 4 5 6
7 6 5 4 3 2 1 2 3 4 5 6 7
The problem is when i input a number greater then 9 as it requires 2 spaces . I m pritty sure i solved it incorrectly or at lost not optimal as i m using a string that decreases on each line to create the pyramid effect.
import java.util.*;
public class C5_17 {
public static void main(String[] args){
Scanner input = new Scanner(System.in);
System.out.println("Enter the number of lines: ");
[Code] ....
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Oct 16, 2014
Having just started college, Bob has been busy looking for a part-time job to fund his new college social life and after only two weeks of looking he has managed to get two job offers! Each job comes with different hours, basic rates of pay and over-time rates so he needs to work out which would get him the most money.
Develop an application that would allow Bob to enter his basic pay rate, his number of regular hours work per week and his number of overtime hours per week. The application should then calculate and display Bobs total basic pay for the week, his overtime pay for the week and his total pay including overtime.
Your application should use instantiable classes to separate the calculations from the user input and output.
Save the instantiable class as Pay.java
Note: The overtime rate is 1.5 times the basic rate of pay
This is my instantiable class code which compiles correctly
public class Pay{
//Declare Data members/Variables
private double pay;
private double hours;
private double overtime;
private double totalBasicPay;
[Code] .....
My errors in the second bit of code that i have never seen before
"C:UsersAndreDownloadsPayApp.java:25: error: no suitable method found for println(<null>,String)
System.out.println(null,"Please enter Basic Pay");
^
method PrintStream.println() is not applicable
(actual and formal argument lists differ in length)
[Code] .....
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May 30, 2014
I am writing a program that displays a smiley face bouncing around the screen. When I load the program it just shows a blank black JFrame. Here is the panel JPanel
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ReboundPanel extends JPanel {
private final int WIDTH = 300, HEIGHT = 100;
private final int DELAY = 20, IMAGE_SIZE= 35;
private ImageIcon image;
[Code]...
I have a suspicion that it might have to do with image = new ImageIcon("happyFace.gif");
I have tried other programs using .gif and they haven't worked on my computer and I haven't been able to figure out why.
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Apr 29, 2014
I'm making a program that displays information for "employee" objects of different types. This works with a hierarchy that goes Person→ Employee→ Fulltime/Adjunct, and a driver that tests the inheritance. The Person class is given and only supplies the name, the employee class manages the year hired and the ID, and the types of employee classes manage the salaries.
One object (called staff[2]) is supposed to first be printed with default information and then later updated via set methods. I figured out how to update the name, but I don't know how to update the rest of the information because the employee's name is managed in the Person class and the reset of the information is managed in the less-general classes, and the objects are all in an array of Person.
How do I call the set methods necessary to update more of staff[2]?Output (scroll to see the updating section)
The current year is 2012
Name: Flintstone, Fred
ID Num: BR-1
Year Hired: 2005
Years Of Service: 7
Salary: 65000.12
Fulltime Type Employee
[code]....
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Nov 27, 2014
I have a bookings table where customers can view their bookings and in the table there is a button with a command button that onclick goes to the dialogue to display the variable petUpdate value but if you have 2 bookings then all the update buttons display the value of the last petUpdate in the arrayList.
DataTable with the button
<p:dataTable
id="bookingTable"
var="customerBooking"
value="#{booking.sessionBookingList}"
editable="true"
style="margin:0px 0px 20px 100px;font-size:15px;width:600px;"
>
Code in the above datatable.......The commented out output label displays the correct value for each but when the button is clicked the dialog only displays the last ones value
<p:column headerText="Check Updates" style ="width:50px;">
<!-- <h:outputLabel value="#{customerBooking.petUpdate}"></h:outputLabel> -->
<p:dialog header="#{customerBooking.petName}'s Status" widgetVar="dlg1" minHeight="60" minWidth="60" maxWidth="60">
<h:outputText value="#{customerBooking.getPetUpdate()}" />
</p:dialog>
<p:commandButton value="?" onclick="PF('dlg1').show();" style ="width:40px;">
</p:commandButton>
</p:column>
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Aug 9, 2014
I'm working on a problem where I have to use the FileInputStream to opens a file that contains the name of a user's favorite book and then displays it.
If the file doesn't exist, then I prompt for the book title and write it to the file using FileOutputStream. This is what I have so far but I'm lost because if I put a file that exists in line 8 then it closes, but if I don't and the user puts their favorite book nothing happens. Or, as far as I can tell nothing does.
import java.io.*;
class DisplayBook {
public static void main(String[] args)
[code]....
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Nov 25, 2014
I did a problem from my book which is "Write a method that displays an n-by-n matrix. Each element is 0 or 1, which is generate randomly. Write a test program that prompts the user to enter n and displays the n-by-b matrix".
So if a user would enter 3, and output could be 0 1 1
0 1 0
1 0 1
So here's my question... I was able to get the program to work in the way my book describes (by just writing the code in the class with the main), but for practice, I want to learn how to do this OOP-style...
I'm not sure how to do this, though, since the method is a void method, so I can't seem to call it within a toString method.
import java.util.Scanner;
public class MatrixTest {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Enter an int");
int number = input.nextInt();
MatrixClass mc = new MatrixClass(number);
[Code] .....
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Jan 29, 2014
I have two classes. time_runner is used for testing my code.
This is what I'm using to test my code:
class time_runner
{
public static void main(String str[]) throws IOException {
Time time1 = new Time(14, 56);
System.out.println("time1: " + time1);
System.out.println("convert time1 to standard time: " + time1.convert());
System.out.println("time1: " + time1);
System.out.print("increment time1 five times: ");
time1.increment();
[code]....
The two constructors are "Time()", which is the default constructor that sets the time to 1200, and "Time(int h, int m)" Which says If h is between 1 and 23 inclusive, set the hour to h. Otherwise, set the hour to 0. If m is between 0 and 59 inclusive, set the minutes to m. Otherwise, set the minutes to 0. Those are my two constructors that I pretty much have down. The three methods however I'm having trouble with. The "String toString()" Returns the time as a String of length 4. The "String convert()" Returns the time as a String converted from military time to standard time. The "void increment()" Advances the time by one minute.
public class Time {
private int hour;
private int minute;
public Time(int h, int m) {
if(h > 1 && h < 23)
hour = h;
[code]....
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Jan 22, 2015
I am writing a payroll program .The program generates random PPS numbers and then takes in users information and calculates the salary accordingly. I am using netbeans and my code is showing errors on line 18 and 42 ("cannot find symbol")on the code for grossPay(). The program seems to crash after a new PPS number is generated and will not run.
package sd_assg_2;
import java.util.Arrays;
import java.util.Random;
import javax.swing.JOptionPane;
public class SD_ASSG_2 {
public static void main(String[] args) {
String[] newPPs = getPPSno();
[Code] ....
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Apr 22, 2015
The intent of the code is to read date from a file, does calculation and then displays that data in a table format on the screen. Then creates another file with those values:
Reads file: Beginningbalance.txt
Displays Data with calculation
Creates a file called "Newbalance.txt" with the following values:
111
251.41
222
402.00
With the way the code is written I can get it to create the file but it only displays one of the customers (111). I know that I need to create a loop but I am not sure how to build that. I tried creating another while loop and changing it to outFile but that was without success.
import java.io.*;
import java.util.Scanner;
import java.text.DecimalFormat;
public class Output {
public static void main(String[]args) throws IOException {
[Code] .....
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