Using blowfish for encryption in Java

The following code is normal for me to encrypt strings encrypted with blowfish

// create a key generator based upon the Blowfish cipher
    KeyGenerator keygenerator = KeyGenerator.getInstance("Blowfish");

    // create a key
    SecretKey secretkey = keygenerator.generateKey();

    // create a cipher based upon Blowfish
    Cipher cipher = Cipher.getInstance("Blowfish");

    // initialise cipher to with secret key
    cipher.init(Cipher.ENCRYPT_MODE,secretkey);

    // get the text to encrypt
    String inputText = "MyTextToEncrypt";

    // encrypt message
    byte[] encrypted = cipher.doFinal(inputText.getBytes());

What should I do if I want to define my own secret key?

Solution

String Key = "Something";

String Key = "Something";
byte[] KeyData = Key.getBytes();
SecretKeySpec KS = new SecretKeySpec(KeyData,"Blowfish");
Cipher cipher = Cipher.getInstance("Blowfish");
cipher.init(Cipher.ENCRYPT_MODE,KS);