import java.io.FileInputStream; import java.security.KeyStore; public class Main { public static void main(String[] argv) throws Exception { FileInputStream is = new FileInputStream("your.keystore"); KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType()); keystore.load(is, "my-keystore-password".toCharArray()); // Get certificate java.security.cert.Certificate cert = keystore.getCertificate("myalias"); } }