For a moment, nothing happened. Then, a soft ding from her IDE. The automated integration test finished. Green bar. Connection successful.
She had two choices: panic, or finally learn the mysterious keytool utility she’d been avoiding for three years. keytool windows
keytool -export -alias old_arkham_gateway -file C:\certs\arkham.cer -keystore C:\certs\temp_keystore.jks It asked for a password. She typed changeit (the default for a new keystore) and then exported the certificate to a file called arkham.cer . She imagined the certificate as a tiny golden key, now sitting in her C:\certs folder. For a moment, nothing happened
Now for the dangerous part—adding it to the Java runtime’s official truststore. One wrong move and she’d break every Java app on the machine. She backed up the original cacerts file first (a habit that had saved her life in the past). Green bar
With a deep breath, she opened a fresh (a lesson learned from three previous disasters). She navigated to her JDK’s bin folder.
keytool -import -trustcacerts -alias old_arkham_gateway -file C:\certs\arkham.cer -keystore "C:\Program Files\Java\jdk-17\lib\security\cacerts" -storepass changeit The tool paused. Then, a terrifying question: