JAVA Puzzle: bits and bytes

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package com.javiermoreno.dominajava.puzzlers;

/**
 *
 * @author ciberado
 */
public class BitsAndBytes {

    public static void main(String[] args) {
        byte a = 10;
        byte b = 20;
        byte c = 200;
        byte d = a + b;
    }

}