CODEWITHSUNDEEP
java
ParagJ
ParagJ

Reputation: 1582

Exit value from java.lang.Process#waitFor()

The method waitFor() returns an integer value which is the return code. The value 0 indicates normal termination. But what are the meanings of other return codes? I am getting an exit value 11. What does that mean? And where all the exit value codes are documented?

Upvotes: 9

Views: 21868

Answers (5)

dghelani
dghelani

Reputation: 47

I have seen conversions happen of the nature that can convert intended negative error codes to convert as follows -

Error code –> -2001 -> Signed Decimal to Binary conversion -> 111111111111100000101111 -> Here 00101111 last 8 bit is picked up and converted back to Decimal – 47 !!

Upvotes: -2

Narendra Pathai
Narendra Pathai

Reputation: 41935

Any value other than non-zero value indicates Abnormal termination. There is no particular rule as to what values indicate what conditions. Read the documentation for the process that you are calling.

0 --> Normal termination

!=0 --> Abnormal Termination

Upvotes: 1

John Smith
John Smith

Reputation: 2332

Every application defines it's own exit codes. E.g. you have to look up the documentation of the application that you started using java.lang.Process. The only common thing they all have is that any other value than 0 is an error.

In the unix world on the other hand there are certain conventions, that many main stream utilities follow, but there are no guarantees.

Upvotes: 1

jnovacho
jnovacho

Reputation: 2903

The program return value depends on program. There is no standard for return values apart from zero meaning OK.

You have to contact author of the program or consult documentation.

Upvotes: 3

Uku Loskit
Uku Loskit

Reputation: 42040

These values are arbitrary and up to the specific program to define. You should refer to documentation or source code of the program that is outputting this exit code.

Upvotes: 12

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