我需要帮助检索Kafka证书(.jks文件)代码从安全的地方在Java

import java.io.FileInputStream;
import java.security.KeyStore;

public class KafkaCertificateLoader {
    public static void main(String[] args) {
        String keyStorePath = "/path/to/your/keystore.jks";
        String keyStorePassword = "your_keystore_password";
        String alias = "your_alias";
        String keyPassword = "your_key_password";

        try {
            // 加载密钥库
            KeyStore keyStore = KeyStore.getInstance("JKS");
            FileInputStream fis = new FileInputStream(keyStorePath);
            keyStore.load(fis, keyStorePassword.toCharArray());
            fis.close();

            // 获取证书
            java.security.cert.Certificate cert = keyStore.getCertificate(alias);
            System.out.println("Certificate: " + cert);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}