JAR File Not Opening On Windows? Here’s How To Fix It

JAR information, additionally known as Java Archives information, are archives of Java class information. In a nutshell, JAR information are teams of information that may include photographs, audio, visuals, and so on., and might run as a single executable program when paired with the Java Runtime Atmosphere.

They’re predominantly utilized by Java builders for coding and programming. Nonetheless, jar information refusing to open is likely one of the many points that may occur whereas utilizing them.

Why Does My JAR File Not Open?

How to Repair JAR File Not Opening?

There are a number of strategies you should utilize to repair JAR information not opening. Nonetheless, earlier than you start, make sure the JAR file has the proper filename extension. To take action, go to the View tab and allow File identify extensions. Be sure that the JAR file has .jar on the finish.

Make your manner down the listing of fixes to see which one works for you. 

Set JRE as Default for JAR information

For the JAR information to be opened as a standalone program, you’ll want to have the JAVA Runtime Atmosphere. Nonetheless, if the JRE will not be set because the default utility for opening jar information, your laptop tries utilizing completely different purposes to open the file and fails to take action.

So, you need to set the JRE because the default utility for opening JAR information.

1. Click on on the particular Jar file you wish to open and right-click it.
2. Choose Open with and Select one other app.
   
3. Test mark All the time use this app to open .jar information possibility.
4. Click on on More apps and Search for one other app on this laptop.
5. Navigate to C:Program FilesJavajrebin. (That is the default set up path of Java. When you have put in it in one other folder, go there as a substitute. The JRE folder may additionally differ relying in your JRE model.)
6. Choose javaw.exe and hit Open.
   

You too can enter assoc .jar=jarfile and ftype jarfile="C:(path to your javaw.exe)" -jar "%1" %* command in an Elevated Command Immediate to set JRE because the default utility.

For Instance:
ftype jarfile="C:Program FilesJavajre1.8.0_341binjavaw.exe”

Nonetheless, you’ll want to make certain of the next issues.

• Enter the instructions in the identical order.
• Guarantee to enter the listing path to your JRE within the second command.
• Be sure that the trail is ready to your JRE as a substitute of JDK.

Use Command Immediate

You too can simply open jar information utilizing command strains within the Command Immediate.

Right here’s how you are able to do it:

1. Launch Run Utility utilizing Windows key + R key.
2. Enter cmd to open Command Immediate.
3. In Command Immediate, kind cd and enter the listing to your .jar file. (If the .jar file is on one other drive, you’ll want to change the chosen drive by coming into the motive force letter.)
4. If you happen to don’t understand how to enter the folder listing in Command Immediate, you’ll be able to merely drag and drop the folder from File Explorer to Command Immediate.
5. Enter the Java -jar <Your Jar filename.jar> command.
   

In case your jar file is non-executable, the above methodology received’t work on opening it. You would want to make use of a special command.

1. In Command Immediate, enter the command java -cp app.jar com.<bundle identify>.<class identify>
   
2. If you weren’t the one to create the jar file and due to this fact have no idea the bundle identify and class identify, you’ll be able to look it up on the downloaded web site.

Setup a BAT File

One other methodology you should utilize to open .jar information is by making a .bat file scripted to open a specific file. This methodology skips the conventional methodology of opening the .jar file and helps resolves points like this.

Comply with the steps under:

1. Proper-click on the empty space within the folder the place your jar file is situated and select New.
2. Choose Textual content Doc and open the doc as is.
   
3. Sort in Java -jar <Your Jar filename.jar>
   
4. Go to File > Save as.
5. Be sure that the Save as kind possibility is chosen as All information.
6. Identify the textual content doc something you need, however embrace a .bat extension on the finish.
7. Click on Save.
8. Open the .bat file.

For non-executable .jar information, you should utilize the identical command as above to create a .bat file that opens it.

Use Appropriate Java Model

When you have a number of Java variations and are attempting to open a jar file made in a special model of Java from the one you’re utilizing to open it, the jar file might not open. Whereas Java is meant to be backward appropriate, you should still face this problem generally.

To unravel this, you should outline a appropriate model with which the jar file ought to open.

Right here’s how you are able to do it:

1. Proper-click your jar file and faucet on Create shortcut.
2. Proper-click the shortcut and choose Properties.
3. Subsequent to goal, enter the next: “C:(path to your appropriate jdk or jre model)” -jar “C:(path to your jarfile.jar)”
   For e.g. "C:Program FilesJavajre1.8.0_341binjavaw.exe" -jar "C:UsersUsernameDownloadsmyjarfile.jar"
   
4. Click on Apply and OK.
5. Open the shortcut.

You too can use this methodology within the Command immediate or create a bat file to open jar information.

Reinstall JAVA Runtime Atmosphere

The jar information cannot begin as a standalone program with out JRE, so JRE have to be working correctly to open jar information.

If there are any errors in JAVA Runtime Atmosphere, you’ll be able to reinstall a clear new copy to nullify any points plaguing it.

Comply with the steps under to reinstall it:

1. Entry Settings from the Begin menu.
2. Navigate to Apps > Apps & options.
3. Find Java and click on on choices button on the left.
4. Choose Uninstall and ensure Uninstall.
   
5. Obtain the most recent Java construct from its official web site.
6. Run the setup file to put in Java.
   

Run Jarfix

Jarfix is a legit software program that many Java builders use to troubleshoot points with jar information. So, you’ll be able to run Jarfix to repair points along with your jar information, together with points like jar information refusing to open.

It’s a light-weight program and doesn’t use many system assets. Nonetheless, make sure you obtain this program from a trusted web site.