Batch script make setlocal variable accessed by other batch files

I am writing a batch file to read a path from file and set it to environment variable. This batch file will be used (called) by many other batch files to get the variable. While writing the batch file I faced a problem will variable expansion so I used SETLOCAL ENABLEDELAYEDEXPANSION to overcome this issue. But doing so the other batch files which is using it are not able to get the variables set.

Below is the batch script,

getVariables.bat

@echo off
SETLOCAL ENABLEDELAYEDEXPANSION
if EXIST "test.dat" (
    for /F "tokens=*" %%I in (test.dat) do set %%I
    echo setting JAVA_HOME to :: !JAVA_HOME!
    echo setting JAVA to !JAVA!
)

In my another batch file I am using the above batach file to get the variables set

   another.bat
 
   call getVariables.dat
   echo "%JAVA%"

But echo is printing "", where it is not set. If this is because of setlocal, how can I overcome this ? I also need setlocal for delaying the expansion and to occur at execution time. How can I resolve this issue?