Tải jar cho linux

Learn about the key active Projects in the Community including Amber [high-productivity language features], Loom [lightweight concurrency], Panama [foreign functions and foreign data], Valhalla [primitive types and specialized generics], and, of course, the next version of Java and the JDK.

If you want to learn how to use the Java that’s available today, head over to dev.java.

Hack on the JDK itself, right here in the OpenJDK Community: Browse the code on the web, clone a repository to make a local copy, and contribute a patch to fix a bug, enhance an existing component, or define a new feature.

In order to install DrJava, you must first have Java installed on your machine. You can skip directly to Installing DrJava if you already have java installed on your machine. [In order to tell if Java is installed on your machine, use your shell to look for javac.]

Installing Java:

1. Navigate to the Oracle Java SE Devlopment Kit Download Page
2. Look for "JDK SE 7u2" [under the section "Java platform standard edition"]. Click on the link that says "Download" under the heading "JDK".
3. Click on the radio button to accept the license agreement .
4. Click the "Linux x86 [32 bit] or x64 [64 bit] download link depending on your architecture.
5. Install the JDK and ensure it works by typing javac

Installing DrJava

1. Go to the Web site drjava.org, navigate to the section titled "Current Stable Release", click the button labeled "Download Jar File".
2. Copy the .jar file to a convenient location in your home directory.

Running DrJava:

From a shell, you can type

java -jar drjava-stable-20040326.jar

or something similar for a different release number of drjava.

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Got a Jar file but struggling to execute it? Learn how to run a Jar file in Ubuntu and other Linux distributions.

How to execute Jar file in Ubuntu and other distributions

A Jar file is basically a Java executable file. So you must have Java installed on your system. If you have Java installed in your Ubuntu, you should be able to run it either by double clicking or by selecting from right click options.

The problem here is that most Linux distributions don’t come with Java pre-installed. So please make sure to install Java on Ubuntu or whichever distribution you are using.

You only need the Java Runtime Environment and you can install it using the command below in Ubuntu-based distributions:

sudo apt install default-jre

Even with Java installed, sometimes running a Java application is not as straightforward as double-clicking the icon. You might have to go through a few steps.

When I tried to open the .jar file by double clicking, I was presented with the following error:

File not executable error

Fixing this error is very trivial. Right click the .jar file, and open properties.

Right click on Jar file and click Properties

Now in the properties menu, open the ‘Permissions’ tab. Enable the ‘Allow executing this file as program’ checkbox.

Enable Execution of the file under the Permissions tab

Now, you can simply double click the .jar file to launch the application, AndroMouse in my case. You can see that it works without any problems.

Java App Running

You have to keep in mind that you have to enable the ‘Allow executing as program’ permission for every .jar application you download. It is disabled by default as a security measure. You should enable it only for the applications that you trust and know are safe.

Further troubleshooting Jar file not running on Linux

Even if you have Java Runtime Environment installed and execution permission set, in some older versions of Ubuntu, the Jar file won’t run. Here’s a fix for that.

Right click on the .jar file and choose the option “Open With Other Application“:

Now on the next screen, select the option Show other applications:

In other applications, if you do not find option for Java, install the Java Runtime Environment first. Normally, you should be able to see the option Open With OpenJDK Java x Runtime. Select it and successfully run it.

Enjoy running Jar file on Ubuntu!

Bonus tip: Run jar file from the terminal

Running the jar file from terminal has its advantages. It may show helpful error messages if the jar file doesn’t run successfully.

In the terminal, use the command like this:

java -jar filename.jar

I hope this short guide was useful to all of you. Which Java based applications do you use? Do you have any other problems with them? Let me know in the comments below!