Can EJB be developed with a Test Driven Development approach? Is that possible with Junit or should it require other tools/frameworks?I am also interested in understanding which mocks should I consider and which part of the IJB code must instead be tested?
View RepliesI want to pass the current timestamp as a key-value pair in JSON and want to store that timestamp in my DynamoDB table. Any sample code in JAVA to perform this operation.
View Replies View RelatedI have to meet certain requirements for this one program, and one of them is as follow: The program will require the user to enter the needed values one after another. If any of the entered values is invalid, then the program will detect that and go into a loop requiring the user to enter a valid value. The program must keep track of the total number of invalid values that the user has entered.
I know how to set a restriction and create a loop to keep asking the same question until it is satisfactory ( in this case I used a while loop) but I am at loss on how I should keep track of the total number of invalid values. I know I can use an increment but how do I set a variable for when the program meets an wrong input from the user.
Trying to make a universal tool for increment an array by one while keeping all the previous values in place.
public K[] increment(K[] k){
int i = 0;
K[] tmp = (K[])new Object[Array.getLength(k)+1];
/*
* Parses through the passed k and fills tmp with all of ks values
[code]...
I'm creating UI's that run on top of backend tools that can run from seconds to days and output GB's of generated data (imagine running tar on the Google servers).
I understand how to execute my backed tools using a runtime process and how to interact with them, and running a simple text as a command line Java app works as expected. The issue occurs when I wrap the code in a JavaFX frount end UI try to update the UI elements in a reasonable manner. If I simply use System.out.println() as in the command line version, I see the output from my task. However, simply trying to put that same output into a TextArea using .appendText() doesn't update the TextArea until the background process completes.
I see all sorts of clippings relating to Task, CreateProcess, invokeLater, updateProgress, but none of them seem to solve their original posters' question (nor mine at this point).
I have been designing a music collection application that runs from a database. I now need to develop a junit test to test the application but I am not sure if Junit has anything to work with testing databases. I have been googling on the internet but most of the search results do not really give any good examples that I can easily follow and adapt to my application. I am using only one table and I would like to test INSERT, UPDATE and DELETE actions and I would also like to test a successful connection.
I once found one tutorial which I cannot find any more that had something that retrieves all the data in the database and stores it in a CSV file and the loops through the CSV file to check or update information.
How do you test the events within an inner class using JUnit
// File: : events/SomePanel.java
// Purpose: Show use of named inner class listener.
import javax.swing.*;
import java.awt.event.*;
class SomePanel extends JPanel {
private JButton myGreetingButton = new JButton("Hello");
private JTextField myGreetingField = new JTextField(20);
[Code] .....
Code extract taken from: Java: Inner-class Listeners
Taking the above example, do I need to use myGreetingButton.doClick to trigger this event to test the respective variables/values being used ? Also the Actionlistener inner classes is private so doubt I can access this from JUnit Test class.
I am making some Junit Tests that process some files with a parser and the do some other processes. I already have a loop for processing a whole folder at a time. But I want to know how can I do so that for each file it processes I can generate an individual report.
View Replies View Relatedi want to use cucumber in java through code. previously i have used it with Junit. but now i need to implement it through coding for the purpose of automating.
View Replies View RelatedI am working on a class project and I have to write the JUnit test for the GUI class ... what I did wrong ... Here is the code for the GUILauncher:
package edu.oakland.production;
import java.awt.*;
import javax.swing.*;
public class GUILauncher{
public static void main(String[] args){
RetrieveWindow gui = new RetrieveWindow();
[Code] .....
First I was using this way how to get connection and all was fine.
con = DriverManager.getConnection("jdbc:derby:memory:datab;create=true");
But now I have to change it to DataSource and how I find out derby had class ClientDataSource for this but for the hell I can't find out how to setup that virtual DB.
ClientDataSource ds = new ClientDataSource();
con = ds.getConnection();
I get an error "ArrayIndexOutOfBounds" in my Junit test on the following method:
public String[] getMACs(String ssid) {
int first = bs.searchFirst(arrayWlanMac, new GetSet(null, ssid, 0, 0),
new ComparatorSSID());
int last = bs.searchLast(arrayWlanSsid, new GetSet(null, ssid, 0, 0),
[Code] ....
The error occurs in the first while loop right in the if condition (if (!arrayWlanSsid[i + 1].getMac().equalsIgnoreCase(arrayWlanSsid[i].getMac())) )
I'm facing a Problem with the JUnit Test for a Fibonacci rabbits sequence. The JUnit Test should test if the function dynFib(int x) completes the calucation in time. The time given is 100ms. The sequence I wanted to be printed is 0 1 1 2 3 4 6 8 11 15 and I got it but the calculation takes more than 100ms. How can I make it calculate faster without using a loop?
I want to do it recursively and dynamically, I kept trying lots of methods but they did not work.
This is my Code:
public class TestFib {
private static int dynFib(int x, Integer[] array) {
array = new Integer[x + 1];
if (x < 0) {
throw new IllegalArgumentException();
[Code] .....
I'm trying to write JUnit test but I'm having trouble with the following errors:
"Test class not found in selected project" -> when running AClassTest.java
"Usage: TestRunner [-wait] testCaseName, where name is the name of the TestCase class" -> when running AClass.java
I have class AClass.java
and class AClassTest.java
They both are in the same package and there is JUnit library
Here's the code:
AClass.java:
Java Code:
public class AClass {
working code is in the last post
} mh_sh_highlight_all('java');
AClassTest.java:
Java Code: public class AClassTest extends TestCase {
working code is in the last post
} mh_sh_highlight_all('java');
I have JUnit exposure only in writing simple programs. Here I have one of the usecases requirement pupose I am generating data file(s) by Java programming and calling this data by Hashmap. My file containing two columns
(1) TimeStamp
(2) Speed.
The file is tab formatted file. The business requirement is to check wether the first column should not be 00000000000000 or NULL or BLANK. My question is, how do I check the first field in a file contaning valid information in Junit test case?
Sample File: ( - tab delimited)
1421103602000 542
0000000000000 989
<NULL> 000
1421103603000 588
1421103604000 700
Unfortunately, I am unable to send my Java code here, It was giving some error while attaching in this thread.
I have wrote this class who read from text line by line and save the words in fileOnTable.. Now i don't know what to read in ReadOffer to save the words in object offers and return this.. One more question.. What JUnit test can write for this code..?
package com.example.crazysellout.UserSide;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
[Code] ....