Load private & public key

import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Signature;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;

class parseKey{
    public void parsekey(String serialzed_keyPrivate, String serialzed_keyPub) throws NoSuchAlgorithmException,  InvalidKeySpecException{

         byte[] encod_Private = serialzed_keyPrivate.getBytes();
         byte[] encod_kPub = serialzed_keyPub.getBytes();

         PKCS8EncodedKeySpec formatted_private = new PKCS8EncodedKeySpec(encod_Private);
         X509EncodedKeySpec formatted_public = new X509EncodedKeySpec(encod_kPub);

         KeyFactory kf = KeyFactory.getInstance("EC");

         PublicKey pub = kf.generatePublic(formatted_public);
         PrivateKey priv = kf.generatePrivate(formatted_private);
      }
}

/*
Error says: `Exception in thread "main" java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: invalid key format
    at sun.security.ec.ECKeyFactory.engineGeneratePublic(ECKeyFactory.java:162)
    at java.security.KeyFactory.generatePublic(KeyFactory.java:334)
    at cobaECDSA.parseKey.parsekey(Sign.java:152(this is the "PublicKey pub = kf.generatePublic(formatted_public);" line))
    at cobaECDSA.Sign.main(Sign.java:98 (this line is the method which called from the main class the line is "parseKey Parsekey = new parseKey(); Parsekey.parsekey(serialzed_keyPrivate, String serialzed_keyPub)" the method on string parameter  ))
Caused by: java.security.InvalidKeyException: invalid key format
    at sun.security.x509.X509Key.decode(X509Key.java:387)
    at sun.security.x509.X509Key.decode(X509Key.java:403)
    at sun.security.ec.ECPublicKeyImpl.<init>(ECPublicKeyImpl.java:68)
    at sun.security.ec.ECKeyFactory.implGeneratePublic(ECKeyFactory.java:224)
    at sun.security.ec.ECKeyFactory.engineGeneratePublic(ECKeyFactory.java:158)
    ... 3 more`
*/