Pass array to Java from Shell Script

Question

I have data as below which I want to pass directly to Java main method from shell script at once.

1 firstfile.txt Success 2 secondfile.txt Failed 3 thirdfile.txt Success 

I know I can call java as below where var1 and var2 represent just single strings:

java $myJava "$var1" "$var2" 

But is it possible that I pass the data above as arrays to Java?

Answer 1

You can't pass a Java array from a shell script via the command line. You can pass a list of strings representing an array.

For example,

a=( '1 firstfile.txt Success' '2 secondfile.txt Failed' '3 thirdfile.txt Success' ) printf "We will pass %d parameters:" ${#a[@]}; printf " '%s'" "${a[@]}"; printf "\n" java "$myjava" "${a[@]}" 

Note that in the We will pass... statement I have added quotes around the strings to mark out the difference between the parameters and their space separated words. The quote marks are not seen by your Java program.