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Java program exiting abnormally in Unix script

I have inherited an extract job program which is a Java program that connects to a database and produces a file from a Unix shell script. At times, I can see the Java program is terminated abnormally and starts executing the remainder of the Unix script by zipping the extract. This is causing a lot of reconciliation issues.
The code is structured as follows:
INSTANCE_NAME=1
PROCESS_NAME=benefitpayment
cd utils
FAIL=0
sh benefitpaymentprocesswithdates.sh $PROCESS_NAME $INSTANCE_NUMBER $1 $2
for job in $dPidLst
do
wait $job || let "FAIL+=1"
done
echo $FAIL
if [ "$FAIL" == "0" ];
then
echo "About to secure file..."
zip -P <password> export.txt secure.zip
...
...
else
echo "FAIL! ($FAIL)"
fi
The $dPidLst is set in the inner Unix script(benefitpaymentprocesswithdates.sh) to call a Java wrapper and is set as:
java program called to generate a file
dPidLst=`jobs -p`
In either of the successful or failure cases, this "dPidLst" is always NULL.
The dPidLst is not exported in the inner script. The script was designed in that manner.
Should dPidLst be exported back to this main program? How do I make this script fool proof in the sense, if the Java program terminates abnormally, it should not execute the remainder of the Shell script? of zipping the file.

The value of dPidLst that you set in benefitpaymentprocesswithdates.sh will not be visible in your calling script.
When you run the benefitpaymentprocesswithdates script, it runs in its own process, and that process gets its own variables.
To pass the process id list back to your script, you need to use a mechanism other than shell variables or environment variables
e.g. at the end of benefitpaymentprocesswithdates.sh, do
echo $dPidList
And when you call it instead of
sh benefitpaymentprocesswithdates.sh
do
dPidList=$(sh benefitpaymentprocesswithdates.sh)
If all it is doing is calling jobs -p, there's no reason to have it in a separate script, of course.

Writing a bash script to run a java program

I'm rank new to bash thus the question.
I've a java program that I've exported as a .jar.
This file when run as
java -jar somefile.jar
goes into an infinite loop and awaits a file name. Based on the correct file path it generates an output.
How do I write a bash script to do automated testing of this project.
I need the scrip to do the following -
Run the program, which is run the same command
provide an array of 5 files as an input to the program
For each file write the output to an log file.

This should do it.
#!/bin/bash
files="$#"
for i in $files;
do
echo "Doing $i"
java -jar somefile.jar <<< "$i"
done
Make sure you chmod u+x filename it first. Then call it like this:
./filename firstfile secondfile thirdfile etc.
Other:
As sjsam pointed out, the use of <<< is a strictly bash thing. You are apparently using bash ("I'm rank new to bash..."), but if you weren't, this would not work.

Suppose my java program is HelloWorld.java. We can run it in 2 ways:
1st using executable jar
2nd by running java class from terminal
create a new text file and name it hello.sh
In hello.sh
!/bin/bash
clear
java -jar HelloWorld.jar
Save it and open terminal:
1 navigate to directory where your HelloWorld.jar is present
2 give permission to terminal to run the bash script by using the following command
sudo chmod 754 hello.sh
3 run you script by running the following command
./hello.sh

Writing a bash or some other script to restart another script

I am running a minecraft server for my son, i'm new at minecraft servers, anyway it seems it keeps dying as it cant keep up? ok so its a VM and i will be assigning more resources to it at some point but my question is as follows
I initiate the server to load up via a script
bukkit.sh is the script an inside it has
#!/bin/bash
java -Xmx1024M -jar /minecraftserver/bukkitserver/craftbukkit-1.7.1.jar -o true
now at somepoint during the day or night it will die as it cant keep up, is there a way i can have some other script run alongside it and see that the process has died and to run that script again to start the server.
when i run top i can see that java is at the top using all the resources so im 100% thats the minecraft java. Does the PID stay the same each time it loads up?
Would be great if someone could let a hand on this ...

I assume the java process remains in the foreground once it's launched? Is there any reason you can't just do:
while :
do
java -Xmx1024M -jar /minecraftserver/bukkitserver/craftbukkit-1.7.1.jar -o true
done
Then any time the java exits, the script will simply restart it.

EDIT:
You could create a script, lets call it craftbukkit.sh
Make sure it is execute by using: chmod +x craftbukkit.sh
Then inside the script you would write:
#!/bin/sh
ps auxw | grep craftbukkit-1.7.1.jar| grep -v grep > /dev/null
if [ $? != 0 ]
then
/path/to/your/bukkit.sh
fi
Change /path/to/your/bukkit.sh to wherever that minecraft startup script is.
Then you need to add this script to your crontab, this is accomplished by entering the crontab editor: crontab -e
If you want the script to run every 5 minutes, add a line that looks like this:
*/5 * * * * /path/to/craftbukkit.sh
Note that you must change the /path/to to point to where you have created the craftbukkit.sh script.

apktool command in shell script does not execute from Java program

I wish to execute a simple bash Script from Java. This script is as follows:
cp /home/ashish/Downloads/apktool/apktool.jar /home/ashish/workspace/MyFirstApp/bin/apktool.jar
java -jar apktool.jar d -f MyFirstApp.apk
echo "Hello World"
The problem is only the cp command is executed and the last echo is executed. The second command doesn't execute. However, if I execute the second command from the command line, it runs well (the apk folder is created).
How can I make Java program execute the apktool command from the shell script ?
Thanks.

Well, in my experience, I would say that Java is not very fond of being ran by means of script.
I did a quick google search. Try the ProcessBuilder, it looks perfect for this situation, in my opinion.
I hope this helps you! :)

running busybox through a .bat using java

I am trying to execute ls command through busybox.
I am creating a .bat file to execute this command which i am calling through .java
However, i am not able to execute commands one after another in .bat file.
This is the contents of my .bat file
"C:\Documents and Settings\Some Directory\Android\android-sdk\platform-tools\adb.exe" shell
/data/busybox/busybox ls
what i think that once i start the shell through the first line of my .bat, the control from the shell is lost hence second command is not executed.
Because if i write my .bat file as
"C:\Documents and Settings\Some Directory\Android\android-sdk\platform-tools\adb.exe" shell ls
it works fine.
I need to write commands in my .bat file so that they exceute one after the another.
I have tried using CALL before each commands in .bat, still it does not work.
I have tried to use multiple .bat, still a fail cause.
Can someone please help me on this?
Thanks a ton.

I am unable to test this myself with ADB at this moment, but this works for other programs that have an input buffer. I will try to verify this tonight, but if anyone else confirms it before then, leave a comment.
#echo off
( echo shell
echo /data/busybox/busybox ls
) | adb.exe