Java SecureRandom as salt

Is this the correct way of generating salts for passwords?

        SecureRandom random = new SecureRandom();
        byte[] salt = random.generateSeed(64);

        String decoded = new String(salt, "Cp1252");
        System.out.println(decoded);

I am trying to generate new passwords (SHA-512), so I will also need a salt.

The hashed password will be = user password + salt ... is this correct?

Wouldnt these strange characters "break" the DB (MySQL)?

Few outputs:

ã2}wÑ»-ÄKÇæꮃzR4qÉÖÙÚ!ž0ÉW9;*Vß4x»)
àöˆ˜£¿{,J¼…HþTù#+Bv(Fp´G~Aò`^e_ElpíÜžS  A!­ñÛz‹y@`ý‡)‡ª€
5a£Æ.¥sgöfÈB:4-�y$Óx%Óâyý¾N¨…áq

Should these salts be also encripted as SHA-512?