Java中的bit、byte、字母、汉字之间的关系

[java]
package com.jadyer.demo;

/**
* Java中的位,字节,字母,汉字之间的关系
* @see =========================
* @see 1 bit = 1 二进制数据
* @see 1 byte = 8 bit (范围:-128到+127)
* @see 1 字母 = 1 byte = 8 bit
* @see 1 汉字 = 2 byte = 16 bit
* @see ===========================
* @author 玄玉<http://blog.csdn/net/jadyer>
* @create Aug 20, 2012 10:28:20 AM
*/    www.zzzyk.com
public class ByteDemo {
    /**
     * @see 控制台打印结果,如下
     * @see 4
     * @see 4
     * @see ----------------------------
     * @see str=ABab
     * @see 65
     * @see 66
     * @see 97
     * @see 98
     * @see ----------------------------
     * @see name=玄玉
     * @see -48
     * @see -2
     * @see -45
     * @see -15
     * @see ----------------------------
     */
    @SuppressWarnings("unused")
    public static void main(String[] args) {
        //byte bb11 = 128; //cannot convert from int to byte
        //byte bb22 = -129; //cannot convert from int to byte
        byte bb11 = 127;
        byte bb22 = -128;
        byte bb33 = 56;

        //byte bb44 = '玄'; //错误,因为: 1汉字==2字节
        //byte bb55 = 'bb'; //错误,因为: 'bb'==2字节
        byte bb44 = 'b';
        byte bb55 = 'B';
        byte bb66 = 'Z';

        //int i11 = "玄玉"; //1 int = 32 bit, but int is numeral
        //short ss = '玄玉'; //1 short = 2 byte = 16 bit = 1 汉字
        short ss11 = '玄';

        //char cc11 = '玄玉'; //这样是不可以的
        //char cc22 = 'cc'; //这样是不可以的
        char cc11 = '玄';
        char cc22 = 'c';

        String str = "ABab";
        byte[] data = str.getBytes();
        System.out.println(str.length());
        System.out.println(data.length);
        System.out.println("----------------------------");

        System.out.println("str=" + new String(data));
        for(int i=0; i<data.length; i++){
            System.out.println(data[i]);
        }
        System.out.println("----------------------------");

        byte[] name = "玄玉".getBytes();
        System.out.println("name=" + new String(name));
        for(int i=0; i<name.length; i++){
            System.out.println(name[i]);
        }
        System.out.println("----------------------------");
    }
}

补充：软件开发 , Java ,