Having issues with Aggregate

I am having issues installing ODK aggregate on my laptop. Please I need assistance. Kindly see the error report.

Looking for java...
JAVA_HOME is not defined. Please verify that Java is installed.
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Hi @Abubakar_Muhammed
have you installed java? If not please take a look how to do that https://docs.getodk.org/aggregate-tomcat/#installation-procedure