This abstract class defines the Service Provider Interface for the CertStore class. Security providers must implement this interface, but applications never need to use it.

public abstract class CertStoreSpi {
// Public Constructors
     public CertStoreSpi(CertStoreParameters params) 
        throws java.security.InvalidAlgorithmParameterException;  
// Public Instance Methods
     public abstract java.util.Collection<? extends java.security.cert.
        Certificate> engineGetCertificates(CertSelector selector) 
        throws CertStoreException;  
     public abstract java.util.Collection<? extends CRL> 
        engineGetCRLs(CRLSelector selector) 
        throws CertStoreException;  
}

Passed To

CertStore.CertStore( )