Use JAVA multi-line outputs as variables within shell script

Question

My JAVA code output looks like below.

    Name="John"
    Age="23"
    Gender="Male"
    Phone="+123 456 789"
    ..
    ..

I want to use above java code output as variables within the shell-script without writing any intermediate file. I'm trying to get the variables using below command inside Myscript.sh

JAVA_OUTPUT=`java -cp ojdbc6.jar:. javaClassFile args`
echo $JAVA_OUTPUT

But I'm unable to set the java output as variables within shell-script

Shawn · Accepted Answer · 2020-04-22 17:55:21Z

2

You can use an associative array to store all the key/value pairs:

declare -A vars
while IFS='=' read -r key value; do
    vars[$key]=$value;
done < <(java -cp ojdbc6.jar:. javaClassFile args)
echo "${vars[Name]} is ${vars[Age]}"
# Etc.

Or if you change your java program to add quotes around the values with spaces like the phone number one, something like source <(java -cp ojdbc6.jar:. javaClassFile args) might work for creating multiple variables.

answered Apr 22, 2020 at 17:55

Shawn

53.9k3 gold badges29 silver badges74 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

bala chandar Over a year ago

I have modified my java code to add quotes for values but source command is not working for declaring variables. And while loop throwing syntax error near unexpected token `<'

Shawn Over a year ago

@balachandar Sure you're using bash?

bala chandar Over a year ago

Yes. I'm using bash env

The Vee Over a year ago

@balachandar source <(your program) has to work in Bash – according to Wikipedia, the functionality behind the syntax has been there since at least 1994. Make sure you don't add any extra space character between the "less than" sign and the left parenthesis.

Collectives™ on Stack Overflow

Use JAVA multi-line outputs as variables within shell script

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related