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The date May 23rd marked 20 years since the Java programming language made its humble launch following a four-year development effort. In that time, the language gas grown, imploded, been declared dead almost as many times as the mainframe. It is now enjoying a renaissance under Oracle’s stewardship.
Googling “Java is dead” brings back millions of results, although there are almost as many people refuting it as declaring it. In the last few years, Oracle has put a lot of resources behind the language to help close all the zero-day exploits and harden the language.
Below are some of the major apps you may not realize were actually written in Java, but you will see that they are and the reasoning for choosing it from the developers. This is far from a complete list, but it does cover a lot of products, including ones you might use every day.
While many of the projects listed below use a mixture of languages, in the case of Hadoop, the whole thing is written in Java. Doug Cutting, creator of Apache Hadoop and former chairman of The Apache Software Foundation, said this via e-mail:
“Java offers a good compromise between developer productivity and runtime performance. Developers benefit from a simple, powerful, type-safe language with a wide range of high quality libraries. Performance is generally good enough. When it falls short, native code has been used to keep overall performance in line with C and C++.
“Some hate Java and complain that another language would have been a better choice, but every language has its detractors. The fact that Hadoop has been widely adopted shows that Java was a reasonable choice.”
Not only is Hadoop written in Java, so is MapReduce.
Twitter started out as a Ruby on Rails application and was the poster child for what RoR could do. Unfortunately, it soon became the poster child for what RoR couldn’t do, and that’s scale. It’s not that Rails doesn’t scale by itself, but it doesn’t handle requests for live data, like searching by hashtags, very well.
The result was a growing number of instances where we saw the “Fail Whale,” an error page that said the service was overloaded. In 2010, Twitter began a major overhaul of its systems. It changed its back-end from MySQL to a real-time version of Lucene and switched from Rails to Java server it calls Blender.
The move to a JVM was driven by both performance needs and developer needs, the company told InfoQ. “The primary driver is honestly encapsulation, so we can iterate faster as a company. Having a single, monolithic application codebase is not amenable to quick movement on a per-team basis.”
The Squarecredit card reader for smartphones and tablet-based point of sale system is a mishmash of languages, using the appropriate language at the place it is needed. That includes Ruby, C++ and Objective-C. The payment stack, which is the important part, uses Java and the third-party API layer uses JRuby and Node.js.
Bob Lee, chief technology officer at Square and a former engineer at Google, told Wired in 2013“Java is really the only choice when it comes to the requirements for a company like ours — extreme performance requirements and extreme scalability requirements. There is no viable alternative.”
Netflix has transitioned from sending DVDs in the mail to consumers to offering on-demand streaming video via TVs, DVD players, game consoles and media boxes like Roku. That means a back-end architecture to handle it all. Netflix handles 2 billion content requests per day with Java-driven architecture.
“The vast majority of the services running within our architecture are built on Java and the Java Virtual Machine [JVM],” Netflix delivery engineering manager Andrew Glover told Silvae Technologies, a European development consultancy. “We have thousands of Java processes running all the time, yet as we grow we don’t have huge infrastructure challenges. We also have a lot of open source tools that are Java-based, which makes it easy to monitor, upgrade, and scale our services.”
“Java is the glue that ties our legacy software capabilities together, and provides a cross-platform modular framework for a collection of unrelated tools and capabilities via the NetBeans platform,” a NASA developer only identified by his first name, Nick, told the developer publication JAXenter.
“Java enables me to deliver solutions that are cross-platform, performant and intuitive all at a low cost for the software development life cycle. Like Nick said, the Java ecosystem makes integrating the existing legacy tools straight forward, while JavaFX and the NetBeans Platform allow for modern reusable attractive interfaces,” said developer Sean P.
Oracle has two Fusion product lines, enterprise applications and middleware. The middleware is a Java framework called Application Development Framework (ADF), which has a lot of design patterns and automates a lot of processes involved in application development. The apps include CRM, financials, compliance, HR, procurement, project portfolio management and SCM.
The apps were written in ubiquitous Javarather than a proprietary coding language to allow organizations to “tap into existing in-house technical skills rather than seek expensive outside specialists.” Using Java and SOA, they have industry standard interfaces rather than proprietary ones.
While your standard Web server services up either static or dynamic HTML Web pages, Tomcat is specifically designed from the ground-up to serve as a Java Servlet engine. It uses the Java Servlet API to execute Java servlets for building dynamic websites. Since its mission is Java servlets, it made sense to write the whole thing in Java. Geronimo is a more enterprise-oriented platform
David Jencks, Project Management Committee (PMC) member for Apache Geronimo, said Java was the only option at the time the project started. “Scala might be a plausible alternative to Java itself, but it had not been invented when either project was started, and choosing Scala over Java would likely reduce the pool of potential contributors by at least 99%. Similar considerations apply to other JVM-based languages,” he said via email.
Mark Thomas, PMC member for Apache Tomcat, said, “I agree that for both Tomcat and Geronimo Java was (and still is) the only choice. More generally, it has been my experience that familiarity of the developers with the language concerned is a much greater factor in the success of a project than the actual language. I have seen plenty of projects struggle because of a decision to implement it using a ‘better’ language and/or technology stack that the development team was unfamiliar with.”
Notch wrote the whole thing in Java and the game is modifiable by players, so they can write Java code to create their own unique play landscape for others. The result is kids are learning to make mods and there are Minecraft workshops where 10 to 14 year old kids gather to learn Java coding, to the amazement of one Oracle developer whose kid attended a workshop.
Notch has said many times at game development conferences he went with Java because he knew it and others knew it, so mods were easy to make. He told a Game Developer Conference panel it was the language he “was most productive at.”
Photo courtesy of Shutterstock.
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Windows Live Mail is not displaying properly? Try these fixes
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Windows Live Mail was one of the most widely used desktop email clients, but some users have forgotten about it. The ones that haven’t are struggling, more often than not, with different errors and bugs. One of the most common issues is that Live Mail isn’t displaying properly.
Other users describe how the Windows Live Mail message body is not showing any text either. Does any of these ring any bells?
After rigorous investigations, we managed to identify a collection of methods that have helped Windows Live Mail users in a similar situation to solve this particular problem. Let’s take a closer look.What can I do when Live Mail is not displaying properly? 1. Empty the temporary files folder
One really easy way to make Windows Live Mail display properly again is to empty the temporary files folder. These files are stored in what’s called the Windows Temp folder.
As a general rule, try finding it at %userprofile%AppDataLocalTemp. Delete all files in it via the Delete button from the Home menu, then restart Windows Live Mail.
Can’t get rid of the temporary files? After following these easy steps, you’ll delete them like a pro.2. Switch antivirus protection to Off in Windows Security
Switch Real-time protection to Off. Scheduled scans will continue to run and don’t worry. It’s only a temporary action.
If you’re having trouble opening the Setting app, take a look at this article to solve the issue.3. Make changes into Program Directory to fix Live Mail display anomalies
If the middle window has a bunch of strange sideways markings which go along the bottom of the very same window, then you could try this instead.
Copy chúng tôi from Windows 10 Version 1709 into the Program Directory of Windows Live Mail on your current Windows 10 version. Follow this path C:Program FilesWindows LiveMail to get there.4. Enable HTML content when Windows Live Mail is not displaying images
Under the Download Images heading, untick the checkbox next to Block images and other external content in HTML email. Don’t do anything about the checkmark from the box below Show images and external content sent from email addresses in my safe sender’s list.5. Uninstall and reinstall the account
Once it is uninstalled, now install the same. Then, restart the computer and check if Windows Live Mail is displaying properly again.
After following all the steps described in this guide, your Windows Live Mail should start working as expected again.
Still experiencing issues?
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If you’re dealing with a rather large database, then the filter function on Excel can come in handy. This function allows you to sort the dataset according to your set conditions. As a result, it makes analyzing and summarising data much easier.
However, there might be instances where the filter function might not be working properly. Usually, such an error pops up when there are blank cells within the dataset. So, a quick fix to the issue is to delete these cells.
But, what if the issue persists? In this article, let’s learn more about the potential causes and the fixes for the filter function not working on Excel.Why is My Excel Filter Not Working?
Here is a list of the potential causes of why the filter function might not be working in your Excel application.
Blank or Hidden Rows between the dataset
Vertical Merged Cells
Data Value Error
Selected more than one worksheet (grouped)
The worksheet is protectedHow to Fix Excel Filter Not Working?
Now that we know have listed out the causes, let’s jump right in with applying the troubleshooting methods for this issue.Select All Data From Sheet
If your dataset has blank rows or columns, it might not select the area (row or column) below or past these cells. As a result, Excel will fail to filter out all the data in your dataset.Remove Blank Rows/Columns
Alternatively, you can also remove the blank rows by configuring the data on your Filter area. Here is how you can do so.Unhide Rows or Columns
If you have hidden rows or columns on your dataset, then Excel won’t apply the Filter function on these data cells. You will have to unhide any hidden rows or columns from your sheet.
Here is how you can do it.Unmerge Cells
Merged cells in your dataset can also create problems while you’re trying to filter your table. Excel tends to disregard the data on merged rows/columns. So, we suggest that you first unmerge all data cells before using the filter option.
Here is a step-by-step guide on how you can do it.Remove Data Errors
If there are data errors in your table, then the filter function might not work on your data set. So, It is best to remove these data errors from the table.
Here is a step-by-step guide on how you can do it.Clear and Add Filter
In some rare cases, the current filter you’re setting up might not work on your data set. So, a quick troubleshooting method you can apply is to clear the previous filter and set up a new one.
Here is how you can do it.How to Fix Filter Grayed Out in Excel?
Here are a few effective methods you can apply when the filter option is grayed out on your Excel Application.Ungroup Sheets Unprotect the Sheet
Another factor you should look out for is to check whether your sheet is protected or not. When you’re sheet is protected, Excel automatically greys out the Filter option. So, to unprotect the sheet,Related Questions Why is my Filter by color not Working? How to fix Excel Not Grouping Dates in Filters?
In some instances, the grouping dates in filters might get disabled. So, here is a step-by-step guide on how you can enable it.
Imagine getting suited up for a meeting, and your camera isn’t working; you really don’t want the effort to go in vain. The Teams app has been around for quite some time. This has given us enough time to understand why the camera may not be working.
Camera issues can be difficult, however, difficult to understand. The issue can range from being extremely general to specific, so the user may find the diagnosis process a bit tedious.
In this article, we will be listing the causes of why your Teams camera may malfunction and how you can fix it. Stick around to get your camera working in no time!
Before you jump to the fixes, skim through the causes and determine the cause most relevant to you. You can find the fixes for each mentioned cause under this article.
Here is a list of causes for why your Teams camera may not be working:
Webcam Used by Other App
Outdated Teams App
Camera Driver Not Updated
Operating System Not Updated
You can test several solutions to fix the camera issue on Microsoft Teams. Below, we’ve listed both the general and specific solutions to the issue. After you’ve gone through the causes mentioned above, apply any of these fixes.
You can start your fix by running a simple test call to ensure that your camera hardware is working properly. If you determine that the issue is actually in your device, you can simply repair or replace your device. However, you can only use this feature if you own the paid desktop version of Microsoft Teams.
Follow these steps to run a test call in Microsoft Teams to check if your device camera is working properly:
Although the update is automatic for the desktop version of the Teams app; you need to update Teams on your mobile phones and tablets periodically. When you leave the Teams app outdated for a long time, it will fail to establish a connection with your device hardware.
You can visit Play Store to update your Teams app if you own an Android mobile or tablet. For iPhone or iPad users, update the Microsoft Teams app from App Store.
Drivers are essential to bridge the gap between hardware devices and the computer system. If you’re a Mac user, all your drivers are installed and updated automatically while you update your macOS. However, you can manually update drivers if you’re a Windows user.
You can update your camera driver from the device manager utility on your Window. Refer to the steps mentioned below to update camera drivers on Windows:
Your camera may not work because another application may be actively using your camera. This can be one of the more probable causes for why Teams may not be registering your video during a video conference call.
Make sure you close all windows that you believe may be using your camera. It’s best to close all applications running in the background. This applies to both the desktop application and mobile application versions of Teams.
Teams cannot access your camera if you haven’t granted the app the necessary permissions. To access devices like your camera and microphone, applications need special permissions for security reasons.
You can grant these permissions from the settings of your device. Using the Teams web version, you can find these permissions in the Site Settings. Refer to the steps mentioned below to grant camera access to the MS Teams application:
If you have more than one webcam connected to your PC, Teams could be actually using the other peripherals. You need to switch the webcam in use from the device settings in the Teams application.
Here are the steps you can refer to while switching camera devices in MS Teams:
When some files go missing or corrupt in a program, certain functions in the application malfunction. It is possible that the problem is that the program files for your camera do not work like it should on the Teams app.
You can fix this issue by repairing or resetting the MS Teams application. Repairing the application will scan through the program files for any missing or corrupted files. Windows will replace the corrupted files with a new, functioning one. Similarly, it will add the missing files.
Resetting the application will do the same, except it will also erase all data from the application. This eliminated the chances of any bugs that may be interfering with the features in the Teams app.
This feature is only available in Windows. If you own a Windows and wish to repair or reset your application, follow these steps:
When you leave your operating system outdated for long, it will severely impact the system. The system fails to maintain a connection between the software and the hardware. Your camera may not be working because your system may have failed to establish communication with your camera.
You need to update your operating system periodically. When you update your system, it not only maintains your system’s functioning but also protects it from any security vulnerabilities. Additionally, updates generally push resolutions to bugs from the previous update.
Follow these steps to update the operating system on your device:
If you are staring at a blank screen, your problem could be that DisplayPort is not detecting the monitor.
DisplayPort is a royalty-free digital display that supports 8k display at 120 Hz, GSync and Multi-stream Transport. Furthermore, it is backward compatible with other display interfaces, including VGA, DVI, and HDMI.
The other widely adopted display interface standard these days is HDMI. However, HDMI can only support 4k 30fps resolutions, and it doesn’t have support for GSync yet. Likewise, DP also supports Multi-stream Transport (MST), which allows you to connect multiple displays to a single DP port in your computer, whereas HDMI does not support this feature. Using DP over HDMI has started gaining traction in recent times, especially now that DisplayPort over USB C is becoming prevalent.
Sometimes, your DisplayPort connection to the monitor will not work due to bad cables, driver issues, etc. If you are having problems with DisplayPort not detecting your monitor, there are a few ways to troubleshoot this issue.
Incorrect Refresh Rate
Firstly, we will assume that your monitor is not broken. If you are having unable to connect your PC with your monitor or television using the DisplayPort connection, we have the following fixes that you can try:
The first fix you should try is restarting your display driver. This method takes just one quick second, and if it fixes the problem then you won’t have to bother with any other solutions.
To restart your display driver, press Win + Ctrl + Shift + B. Your screen will go black for just a second, then resume – indicating that your display driver has restarted. Make sure that your monitor and device are connected via DisplayPort and check if this resolved the issue.
Sometimes it will transpire that the connection was not properly secured at all, when we were sure that we plugged in the cables properly. Make sure you have not made the same mistake.
Check the connection at both the device and monitor ends. Full-sized DisplayPort plugs have a latch that you can secure into the port, make sure this latch is securely deployed.
Unplug the cable from both the device and the monitor.
Plug it back into both ends, making sure that they are connected securely.
Check whether your monitor is displaying now.
Modern monitors and televisions come with many different input sources. Especially for the DP, since it’s a royalty-free format, manufacturers typically include two or more DPs in their devices.
Make sure that you have selected the correct display source on your monitor. If you have selected a DisplayPort as your source, but your monitor has multiple DP inputs, cycle through all available options (typically listed as DP1, DP2, …) until your monitor is displaying your device’s output.
Refer to your monitor’s Device Manual to correctly identify the ports for further clarity on the matter.
DisplayPort cable isolated on white
Perhaps it’s the DP cable that is faulty? If your DP cable is broken, damaged, or not authentic, it might be unable to transmit signals to your monitor properly.
To check if this is the case, get a different DP cable and use it instead. Make sure that the cable is plugged in securely at both ends and check if your monitor can display your device’s output now.
If the pins in the DisplayPort jack that connects the cable are bent or broken on either the monitor or your device, then they won’t be able to make a proper connection. Inspect the ports in both devices to make sure that this is not the case.
If you find damaged or broken DP ports in either device, contact your device manufacturer or an authorized repair center to get this fixed.
Note: If your device is a laptop, then you can use your laptop’s display. Otherwise you will need a second working display or a different connection to make sure you can enact the steps listed in the fixes below.
Your monitor will be capable of displaying output at a frequency of certain frames a second, called the refresh rate. This is specific to your device’s make and model, which you can find in the packaging box or device manual.
If your computer is set to a refresh rate that is vastly different from the refresh rate that is supported by your monitor, this could lead to problems with the DisplayPort not detecting the monitor.
Refer to your monitor’s device manual and set the refresh rate to match it from within the Display Settings in Windows:
Check if your monitor is displaying now.
A faulty display driver could be causing the issue with your DisplayPort. Try uninstalling the display driver and reinstalling it to see if this resolves the issue.
An outdated display driver can also lead you to have problems with the DisplayPort connection. Try updating your display driver to see if this resolves the problem.
You can either let Windows select the most up-to-date driver or alternatively, you can download the latest driver from your graphics card manufacturer yourself and point to the location of the driver. Once this is done, restart your computer.
If your DisplayPort connection was working previously but it stopped working suddenly after a display driver update, then rolling back the update to display driver will probably fix the issue.
If you’ve been through all the fixes above without success, as a last ditch effort, you should contact the manufacturer of your monitor. The problem might be hardware-related that cannot be troubleshooted by users. You can also enlist the help of an authorized repair shop.
DisplayPort cables can and do go bad. Well, not in the sense of fruits left overnight on the counter-top bad, but over time if you move your device around, the bends in the DisplayPort cable can lead to fray and disconnection. Repeated plugging and unplugging can also lead to damage to pins that could spell doom to your DisplayPort cable.
If you are having any of the following problems, then you should check to see if your DP cable is bad:
If you experience any of these issues, you should physically inspect your DP cable and ports.
Up to an extent, you get what you pay for. Or in this case, you could end up not getting what you did not pay for. Cheap display cables generally come with a plethora of problems, including the cables not working outright. This usually happens with knock-off brands of questionable repute.
That said, do a bit of research and see what most DP cables from decent manufacturers cost. There is absolutely no need to splurge on something that is vastly more expensive than an average cable.
DisplayPort is compatible with the HDMI standards, so you can connect the DP output from your PC to the HDMI-in port of your monitor using an adapter.
Windows has many features and functions, and if one of them fails, you can always use the Windows troubleshooter to identify and resolve the problem.
But what happens when Windows Troubleshooter itself does not work anymore? Is there any tool or method to diagnose the problem?
Fortunately, there is. And here’s our detailed troubleshooting guide to find exactly that.
A problem is preventing the troubleshooter from starting 0x80070002, 0x8e5e0247
Windows Troubleshooting error code 0x803c010b
An error occurred while troubleshooting 0x80300113
Besides, the troubleshooter itself might not work at all or get stuck. In any case, you will be unable to identify and resolve your issue with the troubleshooter.
Below we have a list of 15 fixes for you to try for when your Troubleshooter is not working in Windows. We hope you succeed in finding one that works for you!
Troubleshooter failing could indicate a corrupted system file. You can employ the System File Checker (SFC) and Deploy Image Service Management (DISM) tools to identify and fix any corrupted system files.
First use the DISM tool, restart the system, then use the SFC tool (usage outlined below).DISM Tool SFC Tool
The Windows Troubleshooter will not work if Windows cannot locate the Temporary Folders, where it stores temporary files. If this is the case, you will need to set the Temporary Folders path.
Old temporary files stored in your system could also prevent the Windows Troubleshooter from functioning properly. Run Disk Cleanup to see if that solves the issue.
Sometimes a simple Windows Update can fix some issues. You can try updating your Windows to see if this fixes the problem.
If the Cryptographic Services is not running, or if it has stopped for some reason, then Windows Troubleshooter will not function. If this is the case, you will need to start the Cryptographic Service.
You can boot into Safe Mode and see if you can run the troubleshooter from here.Windows 11 Windows 10
Sometimes your antivirus software(s) and firewall service (other than Windows Defender / Windows Security) could be stopping the Troubleshooter from searching for solutions over the internet and communicating with Microsoft servers.
Try to disable your third-party antivirus software and firewall temporarily to see if this allows you to run the Troubleshooter.
It is possible that your Troubleshooter is unable to connect to the internet because of an outdated or corrupted DNS cache stored locally on your computer. To address the accessibility issues with Microsoft Servers, which the Troubleshooter needs to diagnose problems, you need to flush DNS in your computer.
Try clearing the DNS cache and see if this fixes the issue.
If you are getting “Troubleshooter has stopped working” error messages, the problem might lie with your group policy settings.
Some users have reported that repairing .Net framework installation resolved their issue with the Troubleshooter not working.
Some users have also found that making a change to their registry fixed their Troubleshooter problem.
Windows Troubleshooter could be malfunctioning because your account has been corrupted. To see if this is the case, create a new account and run the troubleshooter on it.
To create a new account:
UAC is an important feature of Windows Security feature that controls administrator access granted to applications. If you disable UAC, applications that you launch can run with full administrative privileges without prompting you to grant administrator access.
Thus, it is not recommended that you keep UAC disabled in your machine. However, in this case, it can be useful to disable the UAC temporarily to troubleshoot the Troubleshooter problems.
When you’re done, launch the UAC settings again and slide the slider back to the default position.
If you have created restore points in the past on your PC, then you can use System Restore to revert the system back to that point in time.
As a last resort, you can try resetting your PC to fix the Troubleshooter not working problem.Windows 11 Windows 10
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