Instructions on how to run / open Java files (.jar)

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Today TipsMake.com will guide you how to open and run JAR executable files on a Windows or Mac operating system computer. JAR files (Java Archive) contain data that can be used with Java programs. Most JAR files are simply means of storing data that other programs need to run Java; therefore, you cannot run these files without double clicking them. Similarly, most JAR executable files are downloaded as an installation file for the purpose of installing applications or programs. So if you have problems opening the file, you should check that your JAR file is compatible with the operating system.

Method 1: On Windows

1. Install Java on the computer (if not already installed)

You cannot run JAR files if Java is not installed on the computer. Go to the website https://www.java.com/en/download/ and click the Free Java Download button under the latest Java version, then install Java when the file has been downloaded. .

1. You may have to restart the computer for Java to be fully added.

2. Double-click the JAR file

If the JAR file is feasible and you have Java installed on your computer, the file will open. If not, you need to proceed to the next step.
You may see a pop-up popup asking you which program you want to use to open the file. Then, click Java (TM) and then select OK.

3. Make sure your JAR file is a viable file

The JAR file you download to set up the program differs from the "library" JAR file that stores the data that a Java program can use. Because, JAR files are not feasible without interfaces as feasible JAR files, so you cannot run them.

1. For example, many JAR files in the program's data directory are not feasible files.
2. If you download the JAR file from the network, you need to make sure that you click the correct version for Windows, not the Mac version.

4. Update Java

If the JAR file reports an error after double clicking, you need to update Java. To proceed, you need:

1. Open Start .
2. Scroll down and click on the Java folder.
3. Click Check For Updates .
4. Click Update Now on the Update tab.

5. Double-click the JAR file again

If this file still does not open, it means that the file you are opening is not feasible and therefore the file cannot "run" in the usual sense.

Method 2: On the Mac

1. Install Java on the computer (if not already installed)

You cannot run the JAR file if Java is not installed on the computer. Visit the website https://www.java.com/en/download/ and click the Free Java Download button under the latest Java version, then install Java when the file has been downloaded.

1. When installing a non-Apple file on a Mac computer, you must click OK in the preceding warning, then click on the Apple menu , click on System Preferences , click Security & Privacy (Bao Privacy & privacy), unlock the menu, click Open Anyway next to the file name, then click Open in the prompt before installing the file.

2. Try to double-click the JAR file

If the file is feasible and you have Java installed, the file will open. If not, proceed to the next step.

3. Make sure your JAR file is a viable file

The JAR file you download to set up the program differs from the "library" JAR file that stores the data that a Java program can use. Because, JAR files are not feasible without interfaces as feasible JAR files, so you cannot run them.

1. For example, many JAR files in the program's data directory are not feasible files.
2. If you download the JAR file from the network, you need to make sure that you click the correct version for the Mac, not the version for the other operating system.

4. Update Java

If the JAR file reports an error after double clicking, you need to update Java. To proceed, you need:

1. Open Apple menu .
2. Click System Preferences .
3. Click Java .
4. Click the Update tab.
5. Click Update Now .

5. Double-click the JAR file again

If this time your JAR file is still not open, it means that the file you are trying to open is not feasible and therefore the file cannot "run" in the usual sense.

Refer to some more articles:

1. How to open, run the .jar file on a Windows computer?
2. How to open the .reg file on Windows
3. 12 extremely useful tricks for JavaScript programmers

Having fun!