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// Module 5 Mastery Check No.7

// modify Encode class to use a 8-char string as key.

class EncodeString {

public static void main(String args[]) {

String msg = "This is a test";

String encmsg = "";

String decmsg = "";

String key = "LacIpHEr";

System.out.print("Original message: ");

System.out.println(msg);

// encode the message

for(int i=0; i < msg.length(); i++)

encmsg = encmsg + (char) (msg.charAt(i) ^ key.charAt(i % 8));

System.out.print("Encoded message: ");

System.out.println(encmsg);

// decode the message

for(int i=0; i < msg.length(); i++)

decmsg = decmsg + (char) (encmsg.charAt(i) ^ key.charAt(i % 8));

System.out.print("Decoded message: ");

System.out.println(decmsg);

}

}