What Do I Need Java For Windows 10
Jaiker Edouard
Keeping Java might be necessary for several reasons. One I am familiar with is when one really has to access and use some Web sites that were built in part around Java and are still that way. So, before removing Java one at least should check those older sites that one may absolutely need to access either often, or even now and then, to see if is still necessary to have Java installed and enabled to use them.
This used be one of those sites. Last time I used this was three years ago and it seems to have changed somewhat. It is a long story to explain how to use it. But even so, maybe you can figure out what is going on with Java there.
In short, they are completely different langauges with completely different purposes. Java is a language that one writes programs with and JavaScrupt is a language that one writes websites with. Their name similarity is to do with the fact they follow similar structual conventions, but that is about all they have in common.
And then there is the other part which is the Java browser plugin, which allows websites to provide interactive Java language applets to the user via the browser. Also not to be confused with Javascript. ?
Could this be the thing that I was being asked to turn on, without mentioning it specifically, in a pop up with the cup of coffee and the request that I had to have Java installed and running to get things done (I had normally it disabled, so I would turn it on just for that), whenever I connected to a NOAA Website I have used now and then to get some meteorological data, as already mentioned here and now being investigated by Paul_T ( #2336868 )? Of course, that was three years ago and maybe the site has been modified since.
It sounds like you required java and no longer do. This is consistent with improved security of websites as java has vulnerabilities that make it a target for hackers. Similarly, Flash is no longer used on the web.
Using java locally should be less of a problem.
I still think that, for now, it is best to keep Java installed but disabled (except, perhaps, for javascript that I believe still has to be kept enabled, at least for now?) Not all Web sites one might need to access, especially some glacially-slow-to-adapt government ones, mainly due to limited resources, are likely to have been modified to make the use of Java unnecessary, as well as changing other things that used to be considered to be OK, but no longer are so.
Could this be the thing that I was being asked to turn on, without mentioning it specifically, in a pop up with the cup of coffee and the request that I had to have Java installed and running to get things done (I had normally it disabled, so I would turn it on just for that), whenever I connected to a NOAA Website I have used now and then to get some meteorological data, as already mentioned here and now being investigated by Paul_T ( #2336868 )?
Yes, I do seem to recall some scientific and government websites using that in the past. But similar to Flash, all of those web presentation capabilities have been replaced by HTML5 and Javascript in the browser.
Not running, but still keeping installed and turned off, for a while longer and just in case, some 3rd-party applications that have been widely required in the past, but recently deprecated or else discontinued by their developers, might be a prudent thing to do.
For example, some people say they are having serious problems now trying to access sites such as those of some banks that have not yet replaced Adobe Flash as an application required to access them properly (there is a thread in this site about such flash problems). That being the case, then Flash might not have been turned off in all Web sites as Adobe announced, some time ago, it was going to happen.
Since I have automatic updates turned off, I checked manually and found a Java update today. I used the Java control panel to update since Edge is disabled on my machine. New version is Java 8 Update 291
I am in the process of configuring jenkins on server. There is no Java installed on server.From the link, I understood that Jenkins windows installer will install JRE so that no need of external java installation.jenkins windows installerBut when I ran the command java-version it returns error that no java installed. So it required to install java seperately? Is it needed for jenkins to run java on the server?
You need Java installed because Jenkins generally works from a tomcat server and installing tomcat requires java. If you are in windows, then you need to set the correct PATH variables as well - JAVA_HOME variable to be specific and also add the bin folder to the PATH
For instance, a car dealership has several automobiles on its lot. Each of the cars is an object, but each has different characteristics called classes, which are the different models, engines, paint color and so on. A customer selects a red pickup truck, but wants to add a better stereo system. The new pickup inherits all the characteristics from the object "pickup truck", and the programmer is simply tasked to modify the "stereo" class as opposed to building an entirely new vehicle. This is what makes Java an ideal platform for cell phones, website forums, gaming consoles and anything else that requires constant updates and modifications.
Programs created with Java are portable because they are assembled in bytecode. It can be executed on any server that has Java Virtual Machine (JVM) installed. Unlike C++, objects created with Java do not have to reference external data. This means a Java application will continue running even if your operating system or some other external program crash.
Java is the second-most utilized programming language in the world, just behind C and ahead of C++ and Objective C. It is free to download and update. It requires Windows XP or later, Mac OS X 10.7.3 or later, and works with most Linux-based systems.
Sun Microsystems created Java in 1995 as a universal platform that could run the same application on any machine regardless of its operating system. Java is currently installed on 3 billion devices worldwide. To run Java, you would download and install the Java Runtime Environment (JRE) on your computer . JRE contains the Java Virtual Machine (JVM) and all the classes or blueprints to create objects. Java is especially useful for programmers, but is also essential for end-users who run applications with Java applets.
The Department of Homeland Security recommended everyone disable Java in January 2013 because Oracle, the company that purchased Sun Microsystems in 2009, failed to adequately address a major security issue. Russian anti-virus company Kaspersky Lab, said that half of all cyber attacks in 2012 were directly caused by Java. Most major websites, including Facebook and Twitter, use JavaScript and HTML 5 instead of Java to avoid the security risks.
Java was once considered the future of the Internet and was absolutely necessary to run just about everything after it was released. Now, most cybersecurity experts recommend uninstalling Java if you have it on your computer. If it is essential that you use Java, dedicate one browser for surfing with Java and use another one for all other Web activities.
Java Runtime Environment (JRE, for everyday users) should be downloaded directly from the Oracle website. The download page provides installation instructions, licensing information and notes pertaining to the latest software release. Information is also available that will help you determine which Java package you need. Several other resources are available for download at the Oracle website as well, including the Java Time Zone Updater and Java Access Bridge. Java.com is also powered by Oracle and is an equally reliable place to download JRE. This is the only option that guarantees you get Java without any potential malware attached to it.
Java Development Kit (JDK, for programmers) source code can be downloaded from the Oracle website for Windows users. Ubuntu users can obtain the code simply by searching "openjdk" and installing it. Mac OS X users can download the Java for OS X Developer Package from Apple developer website.
Several third-parties do offer Java downloads, but exercise caution when using them. Download.com is one of the most reliable sites and generally gets positive reviews from users. Do not trust any other websites claiming to offer a free Java download, as you could inadvertently open your system to malware and trojans.
Java 7 and all subsequent versions of the application will always notify users when updates are necessary and when any potential security risks are imminent. It is recommended you install the updates and patches needed when prompted to do so, but only through legitimate sources. Malware developers have created several false updates that look authentic. One in particular is called "Java Update 11" for Windows. The file will appear as "javaupdate11.jar". Once installed, it creates a backdoor way for hackers to compromise your system. Keeping Java up to date is important for security and performance reasons, but it is equally important to make certain you are downloading legitimate files. Only download updates that come directly from the Java homepage or from the control panel installed on your computer. If you get an update notification that prompts you to download it, close the notification. Then go to either the Oracle or Java homepage and check for potential updates there. Java Auto Update automatically checks for necessary updates and patches.
You can set it to scan for updates as often as you like or you can manually check at any time. Oracle recommends you keep Java Auto Update enabled. The default setting will notify users once per month of any needed updates.
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