I encountered the error 'The MATLAB Editor requires Java.'

I encountered the error'The MATLAB Editor requires Java.'

while following the 'Run Batch Parallel Jobs' tutorial. I am seeking assistance with this issue.

+ Java's version on my PC is

version -java

'Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode'

And I have already installed the latest version of Java from Oracle.

The code I executed is shown below:

mywave.m

edit mywave
for i = 1:1024
    A(i) = sin(i*2*pi/1024);
end

Untitled.m

job = batch('mywave')
wait(job)
load(job)

Error message in Command window is shown below:

Error using parallel.Job/load (line 36)

Error encountered while running the batch job. The error was:

Error using edit (line 73)

The MATLAB Editor requires Java.

Error in mywave (line 1)

The same issue occurred in both (R2024a) and (R2023a).

[Saurav]

Can you share the complete error you are getting in the Command window, and also the MATLAB release you're working with?

[changgyu lee]

Thank you for your riple.

I have revised the content according to your request.

Answer 1

[Saurav]

Hello @changgyu lee,

It appears there is an error occurring while following the "Run Batch Parallel Jobs" tutorial from MathWorks documentation.

This issue is not related to Java, as its installation has been confirmed. Instead, the problem seems to be with the implementation of the tutorial itself.

In the ‘mywave.m’ script, the line “edit mywave” is unnecessary if the script file has already been created. This line is typically used only for creating a new script file named ‘mywave’. If the file already exists, this line can be omitted.

To proceed, ensure that only the following code is present in the ‘mywave.m’ script:

for i = 1:1024
    A(i) = sin(i*2*pi/1024);
end

By making these adjustments, the tutorial should run without issues.

Hope this helps.

[changgyu lee]

This is the perfect solution. Thank you for your help.

Have a Nice Day! :D

Answer 2

[hassan alabasi]

Error using parallel.Job/load (line 36)

Error encountered while running the batch job. The error was:

Error using edit (line 69)

The MATLAB Editor requires Java.

Error in mywave (line 1)

edit mywave

Error in mywave (line 7)

load(job)

^^^^^^^^^

[Walter Roberson]

Remove the first line,

edit mywave