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Print out X509Certificates properties

import java.io.FileInputStream; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; public class MainClass {   public static void main(String args[]) throws Exception {     FileInputStream fr = new FileInputStream("sdo.cer");     CertificateFactory cf = CertificateFactory.getInstance("X509");     X509Certificate c = (X509Certificate) cf.generateCertificate(fr);     System.out.println("\tCertificate for: " + c.getSubjectDN());     System.out.println("\tCertificate issued by: " + c.getIssuerDN());     System.out.println("\tThe certificate is valid from " + c.getNotBefore() + " to "         + c.getNotAfter());     System.out.println("\tCertificate SN# " + c.getSerialNumber());     System.out.println("\tGenerated with " + c.getSigAlgName());   } }