?
Solved

run multiple java applications

Posted on 2006-10-31
12
Medium Priority
?
280 Views
Last Modified: 2012-06-21
I have to create a scheduled task in which i have to run  4 separate applications -

1. java -jar cleaner.exe  --- cleans a file
2. sqlldr  --to load clean data
3. java -jar regulator.exe ---- compares new data with old data
4. java -jar findposition.exe - finds position for each record.

I want these application to run one after other. So sqlldr should not run until cleaner has finished cleaning and so on...

Now if I create a single batch file to run all the above applications, will all of these run in a sequence?
0
Comment
Question by:at999
12 Comments
 
LVL 24

Expert Comment

by:sciuriware
ID: 17847770
Yes, in an ordinary .bat they will run sequentially.


Another approach may be:

1) run them from another JAVA program
2) join them and call their 'main()'-s from another class

Everything is good.

;JOOP!
0
 
LVL 92

Assisted Solution

by:objects
objects earned 200 total points
ID: 17848120
> Now if I create a single batch file to run all the above applications, will all of these run in a sequence?

depends on the application, and whether it completes processing before exitting.
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 17848132
>>> I want these application to run one after other
Let's assume that or it will be very complex.

;JOOP!
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 
LVL 4

Assisted Solution

by:TheMajestic
TheMajestic earned 200 total points
ID: 17848301
hi,

as mebtioned earlier in ordinary batch file it will run sequentially but there r prob .

so the best way i to use ant. in ant u can specify a dependency for a job to excute.that is for example the sqlldr will run only after the succesfull excution of its dependency job lets say cleaner.exe.

i think ant bulider is a best way to run this process.
0
 

Assisted Solution

by:DaBump
DaBump earned 200 total points
ID: 17849085
Look at the java open source scheduling technology called Quartz:

http://www.java-source.net/open-source/job-schedulers/quartz

Good luck...
0
 
LVL 24

Accepted Solution

by:
sciuriware earned 400 total points
ID: 17849421
Off topic!
the question was: Now if I create a single batch file to run all the above applications, will all of these run in a sequence?

And the answer is YES.

;JOOP!
0
 

Author Comment

by:at999
ID: 17851739
like if i type in a batch file -
notepad.exe
notepad.exe
notepad.exe

And if I run this batch file,
It wont open the next notepad until the previous one is closed!!!

Would the same thing happen with java.exe and sqlldr.exe???

0
 
LVL 24

Expert Comment

by:sciuriware
ID: 17851779
Yes.
0
 

Author Comment

by:at999
ID: 17852463
Does it depend on operating system?? - XP, NT Server etc?
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 17852697
No
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 17852759
The word 'batch' refers to a sequence, so it's the same everywhere
and has been over 50 years.

;JOOP!
0
 

Author Comment

by:at999
ID: 17852918
many thanks...:)
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
In this post we will learn different types of Android Layout and some basics of an Android App.
Video by: Michael
Viewers learn about how to reduce the potential repetitiveness of coding in main by developing methods to perform specific tasks for their program. Additionally, objects are introduced for the purpose of learning how to call methods in Java. Define …
The viewer will learn how to implement Singleton Design Pattern in Java.
Suggested Courses
Course of the Month7 days, 21 hours left to enroll

616 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question