java - Passing a space-separated System Property via a shell -

i'm having difficulties startup java program shell script (bash) nested variables used. there many system , -d java properties need passed java program. organise them in nicer way 1 below difficult read when in 1 line.

this similar "passing space-separated system property via shell script doesn't work" not same.

here stripped down sample. imagine java program this:

public class main {     public static void main(string[] args) {         (string s : args) {             system.out.println(s);         }     } } 

when invoking this:

java main "first_line" "second line spaces"

it give ok result response:

first_line second line spaces 

however if script used:

#!/bin/sh param01="firstline" param02="second line spaces" params="$param01 $param02" java main $params 

then spaces eaten , second parameter passed unquoted java. result looks this:

firstline second line spaces 

have tried differently quote variables in shell script, far without success. how quote shell variables spaces preserved , parameter passed intact java?

if put shell variable on command line unquoted, undergoes word splitting. prevent word splitting, keep each parameter in double-quotes:

java main "$param01" "$param02" 

or, if want fancy, use array:

params=("$param01" "$param02") java main "${params[@]}"