A batch file takes cert with underscores for periods and add it to cacerts file. The alias is generated from the file name converting underscore to period, and removing .cer

AddCertToJVM.bat

@ECHO OFF
:: REM ::
SET CERTFILE=%1
IF NOT EXIST %CERTFILE% GOTO :MissingCert
FOR /F %%i IN ("%CERTFILE%") DO @SET BASE=%%~ni
SET ALIASNAME=%BASE:_=.%
IF "x%CERTFILE%x" == "xx" GOTO :MissingCert
SET KEYTOOL="%JAVA_HOME%\bin\keytool.exe"
SET KEYSTOREFILE="%JAVA_HOME%\jre\lib\security\cacerts"
IF NOT EXIST %KEYSTOREFILE% SET KEYSTOREFILE="%JAVA_HOME%\lib\security\cacerts"
IF NOT EXIST %KEYSTOREFILE% GOTO :MissingKeyStore
SET STOREP="changeit"
:: REM ::
ECHO %KEYTOOL% -import -noprompt -trustcacerts -alias %ALIASNAME% -file %CERTFILE% -keystore %KEYSTOREFILE% -storepass %STOREP%
%KEYTOOL% -import -noprompt -trustcacerts -alias %ALIASNAME% -file %CERTFILE% -keystore %KEYSTOREFILE%  -storepass %STOREP%
GOTO :EOF
:MissingCert
ECHO Cert %CERTFILE% is missing
GOTO :EOF
:MissingKeyStore
ECHO No Key-Store File Found.
EXIT /B 0