Check if JAVA_HOME is present in environment using batch script

Question

I want to check whether JAVA_HOME is present in environment or not So I wrote the below script a.bat

if "%JAVA_HOME%" == "" 
(
echo Enter path to JAVA_HOME: 
set /p javahome=
)
if not "%JAVA_HOME%" == ""
(
echo %JAVA_HOME%
)

It shows "The syntax of the command is incorrect" where am i going wrong?

Answer 1

Try this:

@echo off
IF "%JAVA_HOME%" == "" (
    echo Enter path to JAVA_HOME: 
    set /p JAVA_HOME=
) ELSE (
    echo %JAVA_HOME%
)