.jar File Not Working With Windows Scheduler

Question

Hi all so i have wrote a program in java (using eclipse) and exported single class program to a .jar file. This program also starts a batch file. When i double-click the .jar file the jar runs perfectly and starts the batch file.

But what i want to do is for the .jar file to run every weekly, so with windows scheduler i created a task with the action being the .jar file. This did not work. I then read somewhere that windows scheduler dose not like .jar so i thought of making a second batch file(start.bat) to start the .jar which would then start the first batch file.

The command in my start.bat is

java -jar myJar.jar

When i double click the start.bat file everything works. But when i set the windows scheduler to start this task i get the following error message for a cmd window

Error: Unable to access jarfile myJar.jar

This really has me stumped as all the files are in the same directory. Any help would be seriously be appreciated, thanks.

Answer 1

Obviously this comment was the answer:

use the full path of myJar.jar instead of a relative path - the running directory of the windows scheduler is C:\Windows\System32 and your jar-file is probably not in this directory.

Answer 2

Task Scheduler cannot run .jar directly you need to run it via command prompt. Because the task scheduler runs the .bat via cmd its default executing location i.e, C:/windows/system32 we need to change the path. While scheduling task in scheduler call TaskName.bat as action. SO,

Create a batch file "TaskName.bat" In TaskName.bat Enter the Following

@echo off

cd "Path to the jar file Example C:\MyFolder"

java -jar Nameofthejar.jar

pause

Answer 3

If you follow the following steps you will not get any issues.

Step 0 : Setup

Add app.schedule.externally_managed=true in application.properties

Step 1: Create a New Task

Click Create

Provide details

Configure for Windows 10 is important

Step 2: Trigger Details

Step 3: Action Details

Step 4: Actions

Make sure all the checkboxes are unchecked as shown below, this is important

Step 5: View Task Details

Refer this and this for more details