Top X Coffee Swing Interview Questions Answers Asked Inwards Investment Banks
The Swing API as well as toolkit are heavily used inwards developing trading application forepart destination inwards Java on both large Investment banks as well as pocket-size broker firms. Doesn’t affair whether its forepart component subdivision or middle component subdivision application, you lot volition uncovering Java Swing GUI everywhere. The Swing-based GUI is used to develop Order entry system, Order monitoring GUI as well as for other tools which trader or operations tin utilization on unlike merchandise life cycle in the forepart office. middle component subdivision as well as dorsum component subdivision space. Due to its heavy usage, at that topographic point are a lot of requirements of Java Swing developer inwards investment banks similar Barclays, Citibank, Deutsche Bank, Nomura, JP Morgan, Morgan Stanley as well as Goldman Sachs etc. Though inwards the era of Java 8, Java FX is positioned to guide maintain over from Swing but at that topographic point are nonetheless a lot of legacy application which agency the requirements for Java Swing developers volition non dry out out soon.
In this post, you lot volition run across some Java Swing interview questions asked from diverse interviews. These swing interview questions are based on my experience equally good equally collected from friends as well as colleagues who guide maintain been interviewed inwards finance as well as insurance domain, commonly known equally BFSI domain inwards India.
So, if you lot are going for whatever Java Swing evolution chore interview you lot tin utilization these java swing interview questions for practice, answers of some swing inquiry are also given. For those which I haven't provided answers, you lot tin produce some inquiry on the cyberspace to uncovering out the right answers.
In this post, you lot volition run across some Java Swing interview questions asked from diverse interviews. These swing interview questions are based on my experience equally good equally collected from friends as well as colleagues who guide maintain been interviewed inwards finance as well as insurance domain, commonly known equally BFSI domain inwards India.
So, if you lot are going for whatever Java Swing evolution chore interview you lot tin utilization these java swing interview questions for practice, answers of some swing inquiry are also given. For those which I haven't provided answers, you lot tin produce some inquiry on the cyberspace to uncovering out the right answers.
This article is inwards continuation of my previous interview articles like:
If you lot haven’t read them already you lot may uncovering them useful for your chore interview or exercise purpose
- 10 interview questions on Singleton designing inwards Java
- 10 interview questions reply on Serialization inwards Java, and
- 15 java threading interview inquiry answers.
If you lot haven’t read them already you lot may uncovering them useful for your chore interview or exercise purpose
10 Java Swing Interview Questions Answers
Let’s showtime amongst some uncomplicated questions as well as and thence we'll motion towards to a greater extent than hard as well as complex ones. In general, this is the designing most of the interviewer volition follow on Java interviews. That’s how it goes inwards swing interview equally well.
1) What is Event-Dispatcher-Thread (EDT) inwards Swing?
The Event Dispatcher Thread or EDT is a special thread inwards thread as well as EDT tin merely last used to spawn those thread on a push click or mouse click.
2) Does Swing is thread-safe? What produce you lot hateful past times swing is non thread-safe?
This swing interview inquiry is getting really pop nowadays. Though it’s pretty basic many developers don't empathize thread-safety effect inwards Swing. Since Swing components are non thread-safe it agency you lot tin non update these components inwards whatever thread other than Event-Dispatcher-Thread.
If you lot produce thence you lot volition run across unexpected demeanour e.g. freezing GUI due to the deadlock of wrong values etc. Some fourth dimension interviewer volition also inquire what are thread-safe methods inwards the Swing API? Those are the methods which tin last safely called from whatever thread as well as at that topographic point are alone a duet of them e.g. repaint() as well as revalidate(). See this article for to a greater extent than give-and-take on Swing as well as thread-safety.
If you lot produce thence you lot volition run across unexpected demeanour e.g. freezing GUI due to the deadlock of wrong values etc. Some fourth dimension interviewer volition also inquire what are thread-safe methods inwards the Swing API? Those are the methods which tin last safely called from whatever thread as well as at that topographic point are alone a duet of them e.g. repaint() as well as revalidate(). See this article for to a greater extent than give-and-take on Swing as well as thread-safety.
3) What are differences betwixt Swing as well as AWT?
One of the classic Java swing interview questions as well as mostly asked on phone interviews. There are a duet of differences betwixt Swing as well as AWT:
- The AWT constituent are considered to last heavyweight spell Swing constituent are considered lightweights
- The Swing GUI has pluggable human face as well as feel.
- The AWT is platform subject i.e. the same GUI volition human face unlike on unlike platforms because they utilization native components e.g. a Frame volition human face unlike on Windows as well as Linux if you lot pick native components. On the other hand, Swing components are developed inwards Java as well as are platform dependent. It also render consistent GUIs across platform e.g. if you lot run NetBeans which is created inwards Java on Linux or Windows you lot volition run across consistency inwards GUI.
You tin farther read Core Java, Volume II--Advanced Features by Cay S. Horstmann. to larn to a greater extent than nigh the departure betwixt Swing as well as AWT.
4) Why Swing components are called lightweight components?
Another pop Java swing interview question, I gauge the oldest that to a greater extent than oft than non comes equally a follow-up to the before inquiry based on your reply provided. Since the AWT components are associated amongst native enshroud resources they are called heavyweight constituent spell Swing components utilization the enshroud resources of an ancestor instead of having their ain as well as that's why called lightweight or lighter component. See here for to a greater extent than AWT base of operations Interview Questions inwards Java.
5) What is the departure betwixt invokeAndWait as well as invokeLater?
This swing interview inquiry is asked differently at unlike points. Some fourth dimension interviewer asks how produce you lot update swing constituent from a thread other than EDT instead of straight asking the departure betwixt invokeAndWait() as well as invokeLater() method of Swing API.
For such form of scenario, nosotros utilization SwingUtilities.invokeAndWait(Runnable r) as well as SwingUtilities.invokeLetter(Runnable r) though at that topographic point are quite a few differences betwixt these two, the major 1 is that invokeAndWait() is a blocking call as well as hold off until GUI update is finished spell invokeLater is a non-blocking asynchronous call, thence it won't hold off for GUI to last updated. The update asking volition last picked past times Event Dispatcher thread from the asking queue.
In my opinion, these inquiry has its ain value as well as every swing developer should last familiar amongst these questions or concept non merely for interview betoken of see but on application perspective. you lot tin read to a greater extent than on my post how InvokeAndWait as well as InvokeLater industrial plant inwards Swing?
For such form of scenario, nosotros utilization SwingUtilities.invokeAndWait(Runnable r) as well as SwingUtilities.invokeLetter(Runnable r) though at that topographic point are quite a few differences betwixt these two, the major 1 is that invokeAndWait() is a blocking call as well as hold off until GUI update is finished spell invokeLater is a non-blocking asynchronous call, thence it won't hold off for GUI to last updated. The update asking volition last picked past times Event Dispatcher thread from the asking queue.
In my opinion, these inquiry has its ain value as well as every swing developer should last familiar amongst these questions or concept non merely for interview betoken of see but on application perspective. you lot tin read to a greater extent than on my post how InvokeAndWait as well as InvokeLater industrial plant inwards Swing?
6) Write code for JTable amongst custom jail cellular telephone editor as well as custom jail cellular telephone renderer?
Now comes the harder component subdivision of Swing interviews, questions asked inwards this component subdivision of Swing interviews is mostly nigh writing code as well as checking developer’s experience of API as well as GUI evolution as well as agreement of the fundamental concept of swing code etc.
The JTable is 1 of the favorite subject of all Swing interviews as well as most pop questions on swing interviews are from JTable, why? Because hither interviewer volition straight inquire you lot to write code. One to a greater extent than argue of immense popularity of JTable based questions is because JTable heavily used inwards all Electronic trading GUI.
The GUI used for online stock trading uses JTable to demo information inwards tabular format thence an in-depth noesis of JTable is required to locomote on online trading GUI developed inwards Swing. While this inquiry is merely an event questions some JTable are mostly centered some updating table, how do you lot handgrip large mass of information inwards table, using customize jail cellular telephone renderer as well as editor, sorting tabular array information based on whatever column etc. thence merely brand for sure you lot guide maintain done quite a few handsome exercise on JTable before appearing for whatever Java Swing interview inwards IB.
The GUI used for online stock trading uses JTable to demo information inwards tabular format thence an in-depth noesis of JTable is required to locomote on online trading GUI developed inwards Swing. While this inquiry is merely an event questions some JTable are mostly centered some updating table, how do you lot handgrip large mass of information inwards table, using customize jail cellular telephone renderer as well as editor, sorting tabular array information based on whatever column etc. thence merely brand for sure you lot guide maintain done quite a few handsome exercise on JTable before appearing for whatever Java Swing interview inwards IB.
7) How produce you lot handgrip opening of the database, file, or network connectedness on a click of a button?
This 1 is 1 of the easy Java swing interview questions. The interviewer is interested inwards whether you lot know the basic regulation of Java GUI evolution or not. The reply is, you lot should non produce this functioning inwards EDT thread instead spawn a novel thread from ActionListener or push as well as disable the push until functioning gets completed to avoid resubmitting the request.
The alone status is that your GUI should e'er last responsive no affair what happens on the network connectedness or database connectedness because these operations ordinarily guide maintain time, specially when you lot are running GUI on deadening networks.
The alone status is that your GUI should e'er last responsive no affair what happens on the network connectedness or database connectedness because these operations ordinarily guide maintain time, specially when you lot are running GUI on deadening networks.
8) Write code to impress next layout (mainly focused on GridBag layout)?
After JTable, the minute favorite subject of the swing interviewers is GridBagLayout. The GridBagLayout inwards the swing is most powerful but at the same time, most complex layout as well as a clear cutting experience as well as expertise some GridBagLayout is desired for developing Swing GUI for trading systems.
No affair whether you lot are developing GUI for equities trading, futures or options trading or forex trading you lot e'er required GridBagLayout. Swing interview inquiry on GridBagLayout volition last mostly on writing code for a detail layout merely similar an event shown here. In which half dozen buttons A, B, C, D, east as well as F are organized inwards a for sure fashion.
No affair whether you lot are developing GUI for equities trading, futures or options trading or forex trading you lot e'er required GridBagLayout. Swing interview inquiry on GridBagLayout volition last mostly on writing code for a detail layout merely similar an event shown here. In which half dozen buttons A, B, C, D, east as well as F are organized inwards a for sure fashion.
9) Prediction of the output of code?
This is some other category of Swing interview questions asked inwards IB whether they volition give you lot code as well as asked what would last the output, how volition the GUI human face like. This type of inquiry is based upon how good you lot empathize as well as visualize the code. Whether you lot are familiar amongst default layout director of diverse constituent classes or non e.g. default layout of JFrame is BorderLayout. So produce some exercise of these kinds of coffee Swing interview questions equally well?
10) The inquiry some JList is similar Creating a JList component such which should comprise all the property classes similar Stocks, Futures, Options, as well as FX etc inwards the shape of String. But constraint is that the JList should e'er last sorted inwards the ascending fellowship except that all assets which start out amongst "Electronic trading” appears on top?
This is an excellent Java Swing interview questions which are based on the real-world project as well as focuses on JList component, Sorting, as well as customizing JList model. For sorting, you lot tin utilization comparable inwards Java as well as past times customizing the JList model you lot tin display content equally requested. Once you lot successfully reply this inquiry at that topographic point may last some follow upward on customizing the color of jail cellular telephone etc which tin last done past times customizing renderer.
These are merely a few swing interview questions which I uncovering interesting. Swing is specially of import inwards Front component subdivision surface area as well as at that topographic point is a lot of need for goodness Swing developers inwards Wall Street firms. If you lot guide maintain goodness skills on FIX Protocol + Core Java + Swing you lot would last most sought after inwards electronic trading domain. Anyway, this listing is no agency consummate thence delight portion whatever interesting coffee swing interview questions you lot guide maintain faced.
Further Reading
Java Swing (GUI) Programming: From Beginner to Expert
Top xxx UNIX ascendency interview questions
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