$ cat ListCacertsAliases.java

import java.security.KeyStore;
import java.util.*;

public class ListCacertsAliases {
    public static void main(String[] args) throws Exception {
        String cacertsPath = System.getProperty("java.home") + "/lib/security/cacerts";
        KeyStore ks = KeyStore.getInstance(new java.io.File(cacertsPath), "changeit".toCharArray());
    }
}


*****
Using current jdk feature dev binary:

java -Djdk.crypto.disabledAlgorithms=KeyStore.PKCS12 ListCacertsAliases
Exception in thread "main" java.security.KeyStoreException: Unrecognized keystore format. Please load it with a specified type
        at java.base/java.security.KeyStore.getInstance(KeyStore.java:1898)
        at java.base/java.security.KeyStore.getInstance(KeyStore.java:1761)
        at ListCacertsAliases.main(ListCacertsAliases.java:7)

****

The JDK has knowledge of the PKCS12 keystore format. It's a spec requirement.

Expected an exception similar to below (from related code) :

        if (!CryptoAlgorithmConstraints.permits("KEYSTORE", type)) {
            throw new KeyStoreException(type + " is disabled");
        }