This creates a new keystore file and a self-signed certificate. powershell
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). keytool windows
If you need a certificate from a public Certificate Authority (CA) like DigiCert or Let's Encrypt, you must generate a CSR file to send to them. This creates a new keystore file and a