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X509CRLEntry

import java.io.FileInputStream; import java.security.cert.CertificateFactory; import java.security.cert.X509CRL; import java.security.cert.X509CRLEntry; import java.util.Iterator; import java.util.Set; public class MainClass {   public static void main(String[] args) throws Exception {     CertificateFactory cf = CertificateFactory.getInstance("X.509");     FileInputStream in = new FileInputStream(args[0]);     X509CRL crl = (X509CRL) cf.generateCRL(in);     Set s = crl.getRevokedCertificates();     if (s != null && s.isEmpty() == false) {       Iterator t = s.iterator();       while (t.hasNext()) {         X509CRLEntry entry = (X509CRLEntry) t.next();         System.out.println("serial number = " + entry.getSerialNumber().toString(16));         System.out.println("revocation date = " + entry.getRevocationDate());         System.out.println("extensions = " + entry.hasExtensions());       }     }     in.close();   } }