So, here is the question I have been working on: Write a java class named Time that prompts the user to input the elapsed time for an event in seconds. The program then outputs the elapsed time in hours, minutes, and seconds. (For example the elapsed time is 9630 seconds, and then the output is 2:40:30 ).Hint: an hour has 3600 seconds and a minute has 60 seconds. Use Scanner class for reading the input.
Here is my code:
import java.util.Scanner;
public class Time {
public static void main(String[] args) {
Scanner scan= new Scanner(System.in);
System.out.println("Enter the elapsed time in seconds:");
int totalseconds= scan.nextInt();
[Code] .....
Now, I know I am supposed to use the remainder operator to figure out the time in minutes and seconds, but the hours has be a little confused. Right now this code compiles but gives me an exception.
public Unit(String code, String name) { enrolStudent(student); this.unitCode = code; this.unitName = name; } public void enrolStudent(Student newStudent){ students = new ArrayList<Student>(); newStudent = new Student(24662496, "Kingsley", " Iwunze"); students.add(newStudent); }
how can I call this enrolStudent() method on this Unit constructor in another class when I create a new Unit. all I need is to enroll students in units when units are created. below is my create unit method.
I would like to know how to convert a time from one specific timezone to another specific timezone. The code does not convert the time correctly. But if I replace Date
date = sdfAlien.parse("16:00:00"); to Date date = new Date();
then conversion works but that's not what I want as my input will be supplied by users with time in HH:MM:SS and Java supported timezone.
In below case, we can say "16:00:00" and "Asia/Singapore" will be supplied by the user and I need to convert it to America/New_York time.
I'm working on a Weight Conversion program. The code I have for the program is:
import java.util.*; import java.awt.*; import javax.swing.*; public class Frame4a implements ActionListener { public static void main(String[] args) { JFrame f = new JFrame("Weight converter"); JPanel P = new JPanel(); // Make a JPanel;
[Code] .....
The errors I'm getting are:
Frame4a.java:33: error: class, interface, or enum expected public void actionPerformed(ActionEvent e){ ^ Frame4a.java:37: error: class, interface, or enum expected double kp= Double.parseDouble(strkilo);
I am working with a java program that uses binary and sequential search. i have those two methods working. In the program i also need to return the price of parallel arrays. This is my code so far:inventory class:
//FileName: InventoryData.java //Prog: Brock Paston //Purp: To load and search through arrays with binary and sequnetial search. package stu.paston.program6;
I was told to create a program that prints the time between 00:00 (0:00 a.m.) and 23:45 (11:45 p.m.) in the 24-hour clock and 12-hour clock format like this:
In my application, users select the year and manage data for that year (for example, they can choose 2014 for managing invoices for 2014, then switch to 2015 and work with that year). Each year as his own database.
I'am able to change persistence unit connection at runtime with Persistence.createEntityManagerFactory(PU_NAME,map_with_connection_info) This procedure build a non-jta environment.
It is possible to create entityManager / entityManagerFactory with JTA ?
I don't want to create new persistence unit each year or each time a new database is required.
So I have this 2D array that contains some Object foo.
[f] [f] [f][f]
[3][3][3][3]
[b][b][b][b]
[x][x][x][x]
[ ][ ][ ][ ]
[ ][ ][ ][ ]
[ ][ ][ ][ ]
I want to shift all the rows down one unit, starting for the rows containing x. So the x row is first shifted to row 4. then the b row shifted to where the x row was, row 3 and so on. My question is:
1. How can I check if the next row is empty
2. How do I shift a row down
Here's my attempt:
Java Code:
//board is the 2D array defined elsewhere public void shiftRowDown(){ int counter = 0; int rowCounter = 0; for (int i = 0; i < this.board.length; i++) {
Is it possible to write a program that changes the value of a certain variable when a certain predefined time arrives, without running the same loop over and over again (and stucking the computer)?
I am having a difficult time trying to get results from the code below. The purpose is for my program to insert the DHL tracking number in the tracking text box, and then for the program to "click" the search button and get the tracking results.
This is the code:
import com.gargoylesoftware.htmlunit.WebClient; import java.io.*; import com.gargoylesoftware.htmlunit.html.HtmlPage; import com.gargoylesoftware.htmlunit.html.HtmlInput; import com.gargoylesoftware.htmlunit.html.HtmlSubmitInput; import java.net.*; public class DHL {
[Code]...
These are the results I am getting in the console (in red), which look like an error:
Apr 23, 2015 7:55:49 PM com.gargoylesoftware.htmlunit.javascript.host.html.HTMLElement addbehavior WARNING: Unimplemented behavior: #default#userdata Exception in thread "main" com.gargoylesoftware.htmlunit.ElementNotFoundException: elementName=[*] attributeName=[name] attributeValue=[sbtc] at com.gargoylesoftware.htmlunit.html.HtmlPage.getElementByName(HtmlPage.java:1747) at htmlTest.main(htmlTest.java:17)
I just cannot figure it out for the life of me. Also, is there a community that focuses on HTML Unit?
I have a bean that represents data been collected from a form on a jsp page. Currently I would like to validate my fields and write some test cases for them. As you can see from my test case example I test a string in the hope that it fails because it contains only one letter. My problem is my unit test is passing. The reason this is from what I can tell is that at runtime it fails when I try to persist my object using my entity manager. During my unit test I just I don’t call my entity manager I just try and set the field.
What I thought would happen was that when I use my bean fields set method the annotations would be checked and fail at that point. Hence why I expected my unit test in this case to fail.
What I would like to know is
1.Are annotations specifically designed to validate when I persist my object and am I using them incorrectly at this point?
2.Is this the best method to use to validate fields, is there a better way, should I write my own code to validate for me when I set my value?
a. Should I throw an exception from the set method of each bean field?
Unit Test:
@Test public void testName(){ Human h=new Human(); try { h.setFname("a"); } catch (Exception e) { // TODO Auto-generated catch block fail("failed"); e.printStackTrace();
I am coding for the first time using the simplified BlueJ platform. I am trying to write a simple conversion program from cm to inches and inches to cm.
Here is my code so far (I also have the textIO file linked to it):
public class UnitConverter { public static void main(String[] args){ int inchesTocentimetres, centimetresToinches, exitApplication; int choice; double result;
Write a java program to read the time intervals (HH:MM) and to compare system time if the system time between your time intervals print correct time and exit else try again to repeat the same thing. By using StringToknizer class.
When creating VRML, there is a convention that one unit corresponds to 1 metre in the real world. This makes sharing models easier. Is there any similar convention for JavaFX 3D?
What I'm supposed to be doing is making it so the program can accept multiple filter and sort commands at one time, and each should be separated by a whitespace.I was thinking about parsing the input again, using whitespace as the delimiter, then normally progressing with each token, as though there was only one command.
However, coding this the way I'm doing it will firstly probably take hours, and secondly, it's likely not even right. I don't have any real way to determine which token contains which data from the Song objects.These are the specific requirements for this portion:A sort/filter command consists of one or more of the following options:
-year:<year(s)>
-rank:<rank(s)>
-artist:<artist>
-title:<title>
-sortBy:<field>
Any number of these options may be given, and they may be given in any order. If multiple options are specified, they will be separated by whitespace.
GazillionSongs Class (the main) Java Code: import java.util.*; import java.io.*;
i am very new to java programming what i am doing wrong here. Write a program that calculates how much an employee would earn over a period of time (in months), if, every month, the employee’ pay-per-hour rate is one dollar more than the month before (so if his starting perhour rate is 7.25, next month it will be 8.25, next month 9.25, and so on). The employee is going to work 20 hours per week, 4 weeks per month.
The program should input from the user and validate both number of months (which should be a positive integer larger than 0) and the pay-per-hour rate (which should be a floating-point number larger than $7.25 – the minimum federal wage pay-per-hour rate). For each one of these values; if the value is wrong, the program should repetitively ask for that value until the value entered is correct. The program should confirm/output the correct value.
/* This program calculates how much as employee would earn if every month the employee pay per hour would increase by a dollar */ package nick.employee; import java.util.Scanner; public class nickemployee {
So I need to make a for loop for this problem: A certain type of bacteria doubles its population every twelve hours. If you start with a population of 1000, how many hours will it take for the population to exceed 1,000,000? Output needs to be in table format, such as:
the below program is to read the time intervals (HH:MM) and to compare system time if the system time between your time intervals print correct time and exit else try again to repeat the same thing. By using StringToknizer class. and i have written like this
import java.io.*; import java.util.*; public class Main { static int k1,k2,v1,v2; public static void main(String args[]) throws IOException { DataInputStream o=new DataInputStream(System.in);
[Code] ....
but is showing correct for some inputs and wrong for some inputs ....
I've got a very simple java program (J.java, see below) on my application server that successfully connects to an Oracle 11.2 database on a database server (both servers are Linux CentOS) using JDBC thin driver from Oracle.
As you can see from the setURL command in the Java code below, I've configured the application and database servers to sit next to each other, and they're on the same network (cross-cable connected to each other), so there's no network traffic on these (development) boxes except my code.
The problem is the execution time varies a lot. If I run it 5 times, it (seemingly randomly) could take 0.01 seconds, or 10 seconds, or 50 seconds, or over a minute to execute. If it takes over a minute (roughly), the program doesn't complete, but the error shown below is returned instead.
------error returned when execution take more than about 1 minute------- gf@host9 [~/dbwork]# java -cp ./ojdbc6_g.jar:. J Exception in thread "main" java.sql.SQLRecoverableException: IO Error: Connection reset at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:494) at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:547)
I have two classes Person and Group. Group object is suppose to contain many Persons, How can I write unit tests when some other classes are involved and abstraction is much higher?
Alright, so I'm having problems with lines 11 - 55. I'm trying to calculate the possible tiles the clicked unit can be moved on and display it to the player.
The field is a 9 (columns) by 5 (rows) grid. A unit with can move tiles horizontally or vertically based on its movement.
Example: (unit = o; possible tiles = x) (assuming movement of 2).
I tried to calculate movement by finding out what column the unit is in, subtracting the column it wants to go to, multiplying the difference by *-1 if the difference is less than 0. Then, doing the same with rows and adding the difference of columns to the difference of rows and comparing it to the unit's movement. Unfortunately, with my code, it seems to move in any directions.
@Override public void mouseClicked(MouseEvent e) { if (Main.cards.size() > 0) { mainloop: for (int i = 0; i < Main.cards.size(); i++) { Card c = (Card) Main.cards.get(i); int startingColumn = 0;
