Extract public key from x509 certificate

ExtractPublicKeyFromCer.java

		String cer = "/home/luis/Downloads/APImIntranet.cer";
		FileInputStream fileInputStream = new FileInputStream(cer);

		CertificateFactory cf = CertificateFactory.getInstance("X.509");
		X509Certificate cert = (X509Certificate)cf.generateCertificate(fileInputStream);
		PublicKey publicKey = cert.getPublicKey();
		byte[] encoded = publicKey.getEncoded();
		byte[] b64key = Base64.getEncoder().encode(encoded);
		System.out.println("b64key = " + new String(b64key));

		X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(encoded);

		KeyFactory keyFactory = KeyFactory.getInstance("RSA");
		PublicKey key = keyFactory.generatePublic(x509EncodedKeySpec);

		System.out.println("x509EncodedKeySpec = " + new String(key.getEncoded()));

Can you please provide the complete class?